The present invention discloses a brake control apparatus for a crane analog quantity stator voltage-adjusting and speed-adjusting control system. The brake control apparatus comprises a logic state detection module, an analog signal detection conversion module, an output module and a sequential logic control module respectively connected with various modules, and the sequential logic control module judges the working state of the crane according to the logic level signal transmitted by the logic state detection module and the analog signal detection conversion module, generates a brake control signal according to the working state of the crane, and transmits the brake control signal to the output module to output. According to the present invention, the brake control apparatus can be directly used for the crane analog quantity stator voltage-adjusting and speed-adjusting control system, the brake control apparatus and the existing control system can automatically co-control the crane mechanical brake according to the predetermined rule under the condition of no influence on the completeness of the existing control system so as to eliminate the defects of hook slipping and crane slipping of the existing control system, such that the purport of safe production is achieved.