Data calculation method and system based on multi-party security, computer equipment and medium

The invention relates to a multi-party security-based data calculation method and system, computer equipment and a medium, and the method comprises the steps: determining an adopted calculation model and characteristic parameters which can be calculated by each participant through a central platform according to a received calculation task, and broadcasting the calculation model and the characteristic parameters to each participant; according to the method, each participant calculates data quality values of characteristic parameters needing to be calculated by the participant and sends the data quality values to a central platform, the central platform screens data quality corresponding to each characteristic parameter, the optimal characteristic parameters of each participant capable of participating in data calculation are screened out, and then each participant performs data calculation by using the optimal characteristic parameters of the participant. By adopting the method, data screening can be carried