The invention discloses a robust unit combination method considering an operation risk. The robust unit combination method comprises the following steps: 1, building an operation risk model based on aconditional risk value according to historical wind power data; and 2, based on the operation risk model in the step 1, establishing a robust unit commitment model taking the operation cost and the operation risk as targets, and solving the robust unit commitment model by adopting a Benders decomposition method and a column constraint generation method (C & CG).