The invention relates to a power system restoration path optimization method considering line operation risk. The method comprises the following steps of: inputting a power system topological structure; calculating a relative possibility of operation failure of each restoration line; calculating a severity index of operation failure of each restoration line; calculating a mean value and a maximum error value of operation risk of each restoration line; optimizing a unit restoration sequence and inputting to-be-restored unit nodes with the same number as blackstart power nodes; solving a ''serial''-stage restoration model; if to-be-restored units are all restored, updating the power system topological structure; otherwise, combining restored lines and nodes into equivalent power points, updating the power system topological structure, and returning to the step S5; solving a ''parallel''-stage restoration model; and after the model is solved, outputting a restoration scheme. According to the method, a dispatcher can set a robust control coefficient according to the risk that the dispatcher is willing to undertake, thereby obtaining an optimal restoration path.