The invention discloses a maintenance platform for a salt mining maintenance ship, and relates to the technical field of salt mining ship maintenance equipment. By means of the maintenance platform, the trouble and the labor are saved, and a pipeline for conveying salt does not need to be pulled to shore for maintenance. The maintenance platform comprises a mounting frame, a workbench, a tractionpiece and a lifting oil cylinder, wherein the mounting frame is fixed at one end of a ship body; a sliding sleeve capable of moving up and down along the mounting frame is arranged on the mounting frame; the lower end of the sliding sleeve is hinged with the workbench; and one end of the lifting oil cylinder is connected to the mounting frame. According to the maintenance platform, the arranged sliding sleeve is capable of moving up and down along the mounting frame under the action of the lifting oil cylinder so as to control the workbench to move up and down; when the workbench moves to thelower side, the pipeline for conveying the salt can be conveniently placed on the workbench; and after the pipeline is placed on the workbench, the workbench is lifted to a position convenient for workers to carry out maintenance under the action of the lifting oil cylinder, so that the maintenance is carried out without pulling the pipeline for carrying the salt to the shore.