The present invention relates to a maintenance platform used for a grab bucket. The maintenance platform used for the grab bucket comprises a pair of maintenance platforms, each maintenance platform is hinged to a host structure assembly through a hinge mechanism, and hooks used for fixing the maintenance platforms are arranged on the host structure assembly. The maintenance platform used for the grab bucket is simple in structure and convenient to use; through arrangement of the pair of the maintenance platforms on the host structure assembly, maintainers can get up the maintenance platforms through the host structure assembly to rapidly maintain the grab bucket, and the maintenance platforms can be rotated through the hinge mechanisms and fixed inside the host structure assembly through the hooks after the maintenance, thereby greatly saving space occupied by the maintenance platforms; and the maintenance platform for the grab bucket has the advantages of being simple and light, easy to maintain, low in manufacturing cost and simple to operate.