The invention discloses a connector for a hydraulic support and a movable pulley device. The connector comprises an inserting and hanging part, a pin connecting part, a limiting plate and a bolt assembly; a baffle of the inserting and hanging part is welded to the back end of an inserting plate of the inserting and hanging part, and the baffle and the inserting plate are in an L shape after beingwelded; a pin column hole is formed in the front end of the inserting plate; the pin connecting part is formed by welding a transverse plate, a vertical plate and a vertical pin column and is in a T shape, and the vertical plate is provided with a hinging hole; the inserting plate of the inserting and hanging part is inserted into a gap formed between the bottom of a connecting rod of the hydraulic support and a base backwards from the interior of the hydraulic support and extends to the position behind the hydraulic support, and the baffle is limited by the connecting rod; and the vertical pin column of the pin connecting part is arranged in the pin column hole of the inserting plate, the limiting plate is arranged in a limiting groove of the vertical pin column, and the inserting and hanging part, the pin connecting part and the limiting plate are connected together through the bolt assembly. Therefore, the connector is connected with the hydraulic support; and after the connector isconnected with the movable pulley device through the hinging hole, connection between the hydraulic support and the movable pulley device is achieved.