The study dealt with 21 science popularization Tik Tok accounts that are listed within the top 50 or 100 from five popular rankings, and sampled 10 most upvoted short videos from these accounts. By analyzing their subject types, scientific content, narrative methods and scientific accuracy, we found that: some of the short videos lack scientific accuracy by emphasizing visual impact instead of profound narration of scientific content, some short videos tend to use sensational headlines that might represent risk, and short video producers rarely use platform operation rules to expand influence. To solve these problems, this paper puts forward the following thoughts and suggestions: science popularization institutions improve their operational capabilities in presenting appealing Tik Tok content; information sources be reliable to strengthen the authority of accounts and their content; products with distinctive features be created to increase the recognizsability of science popularization Tik Tok accounts; and producers make much use of platform operation rules to enhance the influence of science popularization Tik Tok accounts.