A pressure-relief acceleration drill bit structure comprises a drill bit body, a main passage, a passage transition area, a water pore, a clamp spring groove, a seal groove and an erosion resistant layer, wherein the main passage, the passage transition area and the water pore are positioned in the drill bit body, the main passage is communicated with the water pore through the passage transition area, axes of the passage transition area, the water pore and the main passage are positioned in a same plane, the clamp spring groove and the seal groove are positioned in the water pore, and the erosion resistant layer is positioned on the surface of the passage transition area. An included angle between an outlet direction of the drill bit water pore and an axis of the drill bit is adjusted from 0-60 degrees to 90-180 degrees, direct downward impact to hole bottom of mud is changed into slantingly upward impact opposite to the hole bottom, a low-pressure vortex area is formed at the hole bottom under rotation driving of the drill bit, and accordingly local pressure of an acting face of the drill bit is reduced, hold-down effect of mud column to stone chips is reduced, drilling speed is increased and drilling cost is reduced.