Drilling machine drilling control system and deviation detection device thereof

The invention belongs to the technical field of drilling machines, and particularly relates to a drilling machine drilling control system and a deviation detection device thereof, the drilling machine drilling control system comprises a PLC controller, a monitoring module, a deviation detection module, a drilling driving module, a slurry discharge module and a remote monitoring operation module; by arranging a transparent pipe and a lifting block, in the working process of the drilling machine, a drill rod is located in the middle of a first detection shell and a second detection shell, when the drill rod deviates towards a certain direction, the drill rod can press a rotating column in the direction, the rotating column drives a piston rod to move through a U-shaped plate, and the piston rod drives a first circular plate and a piston block to move; a first spring is stretched, a piston block moves to blow air in a piston barrel into a transparent pipe through a connecting pipe, the air enters the transparent