# How do I check a keyword's heat on Douyin and Xiaohongshu before advertising? (2026)

2 official indexes answer it: on Douyin, the trend index (巨量算数); on Xiaohongshu, the search index in PGY (蒲公英). Both can be looked up by hand on their own sites. For dozens of keywords or a regular check, DataXAPI reads both on one key, at $0.0060 for up to 5 Douyin keywords and $0.0400 for one Xiaohongshu keyword. DataXAPI reads Douyin with 36 endpoints, from $0.0020 a call; a failed call is not charged.

Updated 2026-11-04

## What to read, and what it tells you

Both figures are scores the platform works out, not numbers of searches. The two platforms score separately, so compare a keyword over time or against others on the same platform, not Douyin against Xiaohongshu.

| You want | Douyin | Xiaohongshu |
| --- | --- | --- |
| Is it rising? | `douyin.index.keywords.history`: daily index for dates you pick, with the last period and a year ago | `xiaohongshu.pgy.keywords.history`: about the last three months, daily, with notes, impressions, reads and engagement |
| Which words go with it? | `douyin.index.keywords.related`: related words of a week | `xiaohongshu.pgy.keywords.related`: what people search before and after it |
| Who cares about it? | `douyin.index.keywords.audience.get`: age, gender, region, interests | Not by keyword |

## Three industries, the same steps

Put your own words in. These are examples of what to query, not results.

One industry with 5 words comes to about $0.25. Douyin: one history call at $0.0060, one related call at $0.0020 and one audience call at $0.0020, $0.01. Xiaohongshu: 5 histories and one related call at $0.0400 each, $0.24.

| Industry | Words to try | Ask yourself |
| --- | --- | --- |
| Beauty | 防晒霜, 粉底液, 口红 | Which product word is rising this season against a year ago |
| Medical aesthetics | 水光针, 热玛吉, 光子嫩肤 | Which treatment words have related words you had not thought of |
| Camping | 露营装备, 天幕, 露营车 | When the rise starts, so the money goes in before it |

## Good to know

Douyin's figures usually come a day or two late. Its related words come by the week. A word the index does not cover is left out of the answer. On Xiaohongshu the three-month range is set by the platform and cannot be chosen.

## Endpoints

- [Douyin trend-index keyword trends](https://dataxapi.com/apis/douyin/index/keywords/history/) ($0.0060 / a call): Get the day-by-day search index and composite index of a keyword, or of one to five keywords at once, on Douyin over a date range, from 巨量算数 (the Douyin index), with the daily averages of the period, of the one before and of a year earlier. An index is the platform's score of volume, not a count of searches; days are calendar days in China time (UTC+8).
- [Xiaohongshu PGY keyword search index](https://dataxapi.com/apis/xiaohongshu/pgy/keywords/history/) ($0.0400 / a call): Get a keyword's day-by-day search index on Xiaohongshu over about the last three months, from the platform's creator marketplace, with each day's notes about the keyword and how often they were shown, read and engaged with. The platform sets the period; it cannot be chosen. The search index is the platform's index, not a count of searches; days are calendar days in China time (UTC+8).
- [Douyin trend-index related keywords](https://dataxapi.com/apis/douyin/index/keywords/related/) ($0.0020 / a call): Get the keywords related to a keyword on Douyin in one week, from the platform's own keyword tool: those searched together with it and those that appear with it in content, each with its relevance, its place by relevance, its search index and its composite index. An index is the platform's score of volume, not a count of searches.
- [Xiaohongshu PGY related keywords](https://dataxapi.com/apis/xiaohongshu/pgy/keywords/related/) ($0.0400 / a call): Get what people search on Xiaohongshu before and after a keyword, from the platform's creator marketplace, each with its place by relevance, its search index, the notes about it and their reads: for expanding a seed keyword. The search index is the platform's index, not a count of searches; for a word the platform gives no figures for, these are null.
- [Douyin trend-index keyword audience](https://dataxapi.com/apis/douyin/index/keywords/audience/get/) ($0.0020 / a call): Get who is behind a keyword on Douyin over a date range, from the platform's own keyword tool: the share and TGI of each age group, gender, province, city, city tier and interest.
- [Douyin trend-index keyword hot videos](https://dataxapi.com/apis/douyin/index/videos/search/) ($0.0020 / a call): Get the roughly 20 high-index videos Douyin's index tool puts forward for a keyword: caption, link, author's display name, likes, video index and category. One page only; the author's ID and the publication time are not given, the video endpoint has them.

## How-to guides

- [How to get Douyin keyword trends in bulk](https://dataxapi.com/guides/douyin-keyword-trends/)
- [How to get a keyword's search index and related keywords on Xiaohongshu PGY](https://dataxapi.com/guides/xiaohongshu-pgy-keywords/)

## Sources

What this page says of other services is from their own pages and documents, read on 2026-11-04. Prices and features change: check the source before you decide.

- [Douyin's trend index (巨量算数)](https://trendinsight.oceanengine.com/)
- [Xiaohongshu PGY (蒲公英)](https://pgy.xiaohongshu.com/)

## More about Douyin

- [Douyin API](https://dataxapi.com/apis/douyin/)
- [Xiaohongshu (RedNote) API](https://dataxapi.com/apis/xiaohongshu/)
- [Douyin trend-index API](https://dataxapi.com/apis/douyin/index/)
- [Xiaohongshu PGY API](https://dataxapi.com/apis/xiaohongshu/pgy/)
- [How do I export Douyin data?](https://dataxapi.com/answers/export-douyin-data/)
- [What is sec_uid on Douyin, and how is it different from uid and the Douyin ID?](https://dataxapi.com/answers/douyin-sec-uid/)
- [What are aweme_id and modal_id on Douyin, and what is a v.douyin.com link?](https://dataxapi.com/answers/douyin-aweme-id-modal-id/)
- [Is the Douyin search index a number of searches?](https://dataxapi.com/answers/douyin-search-index-vs-search-count/)
- [What is the Douyin keyword index (Ocean Engine)?](https://dataxapi.com/answers/what-is-douyin-keyword-index-ocean-engine/)
- [What is Douyin Xingtu?](https://dataxapi.com/answers/what-is-douyin-xingtu/)
- [Can Douyin's open platform read other people's videos and comments? (2026)](https://dataxapi.com/answers/douyin-open-platform-api/)
- [How do I export all of a Douyin creator's video data? (2026)](https://dataxapi.com/answers/export-douyin-creator-videos/)
- [How do I export Douyin comments in bulk to find what users want? (2026)](https://dataxapi.com/answers/export-douyin-comments-user-needs/)
- [How do I find Douyin videos that took off from small accounts, and can I pull them in bulk? (2026)](https://dataxapi.com/answers/douyin-low-fan-viral-videos/)
- [What are a_bogus and X-Bogus on Douyin? (2026)](https://dataxapi.com/answers/douyin-a-bogus-x-bogus/)
- [What is msToken on Douyin? (2026)](https://dataxapi.com/answers/douyin-mstoken/)
- [Which Douyin API should I use for search, accounts and comments? (2026)](https://dataxapi.com/answers/which-douyin-api-to-use/)
- [How do I pull Douyin's hot-topic data by program? (2026)](https://dataxapi.com/answers/douyin-hot-topics-by-program/)
- [How do I use AI to audit and review an account? (2026)](https://dataxapi.com/answers/ai-account-audit-and-review/)
- [How do I filter Xingtu creators in bulk and see their rates? (2026)](https://dataxapi.com/answers/douyin-xingtu-creators-bulk-filter/)
- [What is ttwid on Douyin? (2026)](https://dataxapi.com/answers/douyin-ttwid/)
- [What are verifyFp and s_v_web_id on Douyin? (2026)](https://dataxapi.com/answers/douyin-verifyfp-s-v-web-id/)
- [How do I convert a Douyin sec_uid to a uid, and back? (2026)](https://dataxapi.com/answers/douyin-sec-uid-to-uid/)
- [How to export Douyin video comments in bulk](https://dataxapi.com/guides/douyin-video-comments/)
- [How to look up a Douyin creator's Xingtu rate card](https://dataxapi.com/guides/douyin-xingtu-creator-rates/)

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Catalog revision bf04cdef3b75e745. [HTML version](https://dataxapi.com/answers/douyin-xiaohongshu-keyword-heat/)