Questionnaire-based data processing method and system

The invention provides a questionnaire-based data processing method and system. The method comprises the steps of 1, obtaining an original data set through answer content in a questionnaire, converting multi-choice question data in the original data set into single-choice question data through attribute decomposition, and filling vacant data in the original data set through linear regression to obtain a first data set; and step 2, performing quality screening on the first data set, removing error data and low-quality data in the first data set to obtain a second data set, marking redundant attributes in the second data set to obtain a preprocessed data set, and inputting the preprocessed data set into a preset data analysis model to obtain an analysis result. The technical problems that false information in original data is difficult to filter, attributes are redundant, multi-choice problem data and missing content data in the original data are difficult to directly process and the like can be solved. 本发明提出一种