Drainage drilling construction process integrating reverse reaming and full-hole casing running

The invention discloses a drainage drilling construction process integrating reverse reaming and full-hole casing running, which comprises the following steps: step 1, drilling preparation: before drainage drilling construction, determining the position and depth of drilling, cleaning and leveling a working area, and preparing a drilling machine, a drill rod, a drill bit and a reverse reaming and casing traction device, the reverse reaming and casing pipe traction device is composed of a drill rod connecting rod, a reverse reaming drill bit and a casing pipe connector, relates to the technical field of coal mine underground crossing drilling construction, and solves the problems that in the drainage drilling and casing pipe running construction process, a casing pipe frequently falls off, and a drilling hole collapses and shrinks to clamp the casing pipe. By means of the reverse reaming and casing pipe traction device, the construction process is safe and reliable, the functions of reverse reaming and casing