According to Shen Shengkang's regulations, you can't directly delete the health declaration record after submitting it. This is to ensure the timeliness and accuracy of epidemic prevention and control. You can log in to Shenshengkang official website or use Shenshengkang mobile phone client to enter My page, find the function of "health declaration", select "Modify declaration record" and make changes according to the prompts. Modifying the declaration record should follow the principle of seeking truth from facts, truthfully fill in personal health status, travel history and other information, and must not conceal or make false reports.