The embodiment of the present invention discloses a questionnaire data processing method, device, server and medium based on data analysis. The method includes: acquiring scene information uploaded by the terminal, and selecting at least one question from the question database according to the scene information, and obtaining Based on the questionnaire constructed with at least one question, send the questionnaire to the terminal, and receive the answer information for the target question in the questionnaire returned by the terminal, and verify the answer information based on the preset questionnaire verification method. If the verification is passed, then Upload the data corresponding to the questionnaire to the block chain, so that the block chain can store the data corresponding to the questionnaire. Through the above method, it is possible to automatically screen questions based on different scenarios during the questionnaire survey process, as well as to identify the questions. Automatic review improves the efficiency and intelligence of questionnaire data processing.