Provided is a 
coupling fracturing method for a 
hard coal bed roof. A drilling 
machine is utilized for drilling fracturing 
drill holes inside the hard roof till the design position, specifically, each static fracturing guide 
drill hole is formed between every two pulse hydraulic fracture 
drill holes so as to form a fracturing 
system; the fracture drill holes are connected to a pulse water 
injection pump through an isometric flow 
distributor with adjustable frequency, and the static fracturing drill holes are filled with static crushing agent 
slurry; under the action of expansion force of the static crushing agent 
slurry, initial cracks formed around the drill holes are monitored, released heat irradiates continuously towards the portions around the drill holes, a similarly elliptical temperature field is generated, and the elasticity modulus of a rock stratum is reduced; and under the action of hydraulic pressures of different frequencies, a 
fracture zone, a fatigue zone and an original stress zone are formed in the positions, around the fracture drill holes, of the rock stratum, when pressure water flows to the rock stratum bearing heat conduction along the cracks, the water and 
heat effect weakens the strength of the rock stratum, and the through time for crack zones among the drill holes is shortened. The method can sufficiently improve the 
utilization rate of the drill holes, operation is easy, and construction is safe and reliable.