The utility model discloses a downhole choke, pressure test device belongs to oil, gas reservoir exploitation technical field. The device includes: inside has cylindrical passage's mechanical packer,gets into the production mandrel that is used for downhole choke and pressure test of passageway, between the mechanical packer inner wall with the cavity that is used for the feed liquor between theproduction mandrel outer wall will the production mandrel is fixed in locating component on the mechanical packer inner wall, the production mandrel includes the flow nipple, is used for to measure the process the pressure sensor of the fluidic pressure of cavity, with power and data record subassembly that pressure sensor connects, the cavity pass through the flow nipple with between mechanical packer and the oil pipe, be located the annular space intercommunication of mechanical packer packing element top. The utility model discloses a with the cooperation of production mandrel and mechanical packer, can realize simultaneously the throttle and the pressure test of liquid in the pit.