The utility model provides a pit shaft wax removal charge device, include storage medicine mechanism, go deep into the inside injection machine of oil pipe and construct and connect the conveying mechanism between storage medicine mechanism and injection machine structure, store up medicine mechanism including being used for storing the medicament to at any time, construct the dosing tank that provides the medicament to injection machine, the dosing tank is fixed subaerial, and this pit shaft wax removal charge device can improve the wax removal effect continuously to pouring into clear wax control medicament in the oil pipe into.