Air pressure type indoor threading device

The utility model discloses an air pressure type indoor threading device. The device comprises a workbench and a piston device, a display screen, a control box and an air pump are arranged on the workbench, a storage battery, a PLC and a first wireless signal transceiver are fixedly arranged in the control box, a lighting switch, an electromagnetic valve switch and a knob switch are fixedly arranged on the control box, the piston device is located in the pre-buried pipe, and a connector is fixedly connected into one end of the pre-buried pipe in a clamped mode. Beneficial effects are as follows. The piston device can be pushed by air pressure to move from one end to the other end in the embedded pipe; the nylon rope is dragged to pass through, and then the cable is driven to pass through the nylon rope; meanwhile, a picture in the pre-buried pipe can be shot through the pinhole camera, dust and other sundries in the pre-buried pipe can be blown out from the other end of the pre-buriedpipe through airflow by o