The invention relates to an automatic ground control device and method for downhole quick orientation and collimation, and belongs to the technical field of design of petroleum drilling tools. The automatic ground control device is composed of a rotary plate, a computer and a torque sensor, the rotary plate is arranged on a derrick, a variable frequency motor, a frequency converter, the computer and a driller input control cabinet are installed on one side of the rotary plate in sequence, a drilling pipe is installed on the rotary plate, and the portion, close to the rotary plate, of the drilling pipe is provided with the torque sensor electrically connected with the computer. The end tip of the drilling pipe is provided with a drill tip through a guide motor. The control method comprisesthe following steps of data collection, data processing and control. According to the control device and method, the drilling pipe does stop rotating in the control process, during the drilling period, the drill tip does not leave from a downhole, and during drilling, correction of a tool face can be conducted. In this way, the borehole purifying efficiency can be improved, the axial friction generated when a drill string moves forwards can be reduced, and the problems are solved that in an existing drilling process, the borehole purifying efficiency is low, the axial friction generated when the drill string moves forwards is high, and the guide motor is prone to speed loss.