The invention relates to a heating type petroleum pump pressurizer. The heating type petroleum pump pressurizer comprises a pressure supply device, a petroleum storage chamber, a flow distributor, a heater and a flow confluence device, wherein the pressure supply device comprises a piston pipe, a floating piston is arranged in the piston pipe, and the tail of the piston pipe is connected with the heater through the flow distributor; the petroleum storage chamber is of an annular structure and is coaxially arranged on the periphery of the piston pipe, an annular heating plate A is arranged on the bottom surface of the petroleum storage chamber, a plurality of petroleum supply pipes are further arranged at the bottom of the petroleum storage chamber in an annular array mode, and the petroleum supply pipes are connected to the tail of the piston pipe through one-way valves A; the tail of the piston pipe is connected with the flow distributor through a one-way valve B; the heater comprises a plurality of heating barrels, heating plates B are annularly arranged on the inner walls of the heating barrels, the top of each heating barrel is connected with the bottom of the flow distributor, and the bottom of the heater is connected with the top of the flow confluence device.