The invention discloses an optimization method and device for wind power investment planning and computing equipment. The method comprises the following steps: building a wind power investment decision model, wherein the wind power investment decision model includes a first target function for realizing annual profit maximization of an investment objective and a corresponding first constraint condition; building a system running model, wherein the system running model includes a second target function for realizing system running cost minimization and a corresponding second constraint condition; performing conditional transition on the system running model to obtain a third constraint condition; solving the system running model to obtain a first optimal solution, and substituting the first optimal solution and the third constraint condition into the wind power investment decision model in order to generate a wind power investment optimization model; and solving the wind power investment optimization model in order to obtain a second optimal solution for realizing optimal wind power investment planning.