The invention a drilling pressure pushing pressurizer which comprises an upper joint, a lower joint, a shell, a piston and a throttling ring, wherein the shell is a hollow barrel; one end of the shell is connected with one end of the upper joint; the piston is arranged in the inner cavity of the shell in a manner of moving up and down; one end, which is far away from the upper joint, of the piston extends out of the shell; the extending end of the piston is in sliding sealed fit with the shell and is connected with one end of the lower joint; the throttling ring is connected with the extending end of the piston and is used for generating throttling pressure difference; through holes are respectively formed in the upper joint, the piston, the throttling ring and the lower joint and are connected with one another in sequence to form a liquid guide channel; at least one pressure release hole penetrating from the through hole in the piston to the outer wall of the piston is formed in the lower part of the piston and retracts into or extends out of the shell along with the up-and-down sliding of the piston. The drilling pressure pushing pressurizer realizes drilling pressure adjustment and can judge the completion of hole drilling on the ground.