Explosive-proof overhead crane with hook applicable to workshop ,warehouse etc where has the mixture of easily combustible and explosive. It main purpose is transport. The kind of crane devided into light and medium according to using frequency. The light applicable to warehouse, examine, assemble workshop, medium used in the workshop of working busy. The crane mainly consists of bridge, trolley traveling mechanism, crab and appliance, all the electrical appliance with the performance of explosive-proof, machinery also take the measure of explosive-proof, in order to prevent the accident of combustible or explosive in the traveling course.