The invention discloses a dynamic weighted comprehensive assessment method-based safety assessment method. The method comprises the following steps of: 1, formulating assessment projects so as to ensure that a client can purposefully access assessment objects under the premise of taking the assessment projects as basis; 2, classifying a plurality of assessment projects and distributing different weight ratios according to a plurality of assessment categories; 3, distributing the plurality of assessment projects to the client by a server; 4, respectively sending assessment scores to the serverby the client according to the plurality of assessment projects; 5, obtaining a plurality of weighted scores by the server according to the plurality of assessment scores and the weight ratios; and 6,obtaining a final assessment score. According to the method, weight ratios are formulated according to assessment categories of assessment projects, weighted scores are obtained according to assessment scores and the weight ratios, and finally final assessment scores are obtained, so that objective and correct assessment results are obtained.