Displaced families in Syrian camps are begging for donations on TikTok while the company takes up to 70 per cent of the proceeds, a BBC investigation found.
Children are live streaming on the social media app for hours, pleading for digital gifts with a cash value.
The BBC saw streams earning up to $1,000 (£900) an hour, but found the people in the camps received only a tiny fraction of that.
TikTok said it would take prompt action against "exploitative begging".
The company said this type of content was not allowed on its platform, and it said its commission from digital gifts was significantly less than 70 per cent. But it declined to confirm the exact amount.
Earlier this year, TikTok users saw their feeds fill with live streams of families in Syrian camps, drawing support from some viewers and concerns about scams from others.
In the camps in north-west Syria, the BBC found that the trend was being facilitated by so-called "TikTok middlemen", who provided families with the phones and equipment to go live.
The middlemen said they worked with agencies affiliated to TikTok in China and the Middle East, who gave the families access to TikTok accounts. These agencies are part of TikTok's global strategy to recruit live streamers and encourage users to spend more time on the app.