Drilling, pressing and vibrating combined pressure-relieving coal bed gas exploitation method

The invention discloses a drilling, pressing and vibrating combined pressure-relieving coal bed gas exploitation method, which comprises: drilling holes at the positions of vibration holes (2) and fracturing holes (3), which are distributed one by one, by using known tool and technology; on the fracturing holes (3), fracturing a coal bed (1) by using fracturing equipment of which the outside diameter is matched with the aperture of the fracturing holes (3) and by a pressure higher than a stratum cracking pressure, and after the fracturing, starting vibration equipment to allow the vibration equipment to perform continuous vibration operation in the vibration holes (2) at a proper vibration frequency; and mounting gas production equipment on the fracturing holes (3), and relieving pressure of the coal bed (1) and drainage coal bed gas by using the conventional method. In the invention, the flowing state of the coal bed gas in the coal bed (1) is improved; and the coal bed is subjected to alternating tensile st