The utility model discloses a colliery heading ventilation dryer air outlet regulation and control device based on PLC control, including U type frame, the rack -track, ventilation dryer and PLC programmable controller, the U type erects the below of putting at the rack -track, U type frame is invertd and is placed, the ventilation dryer passes U type frame and rotates with U type frame lower extreme and be connected, swing mechanism about install U type frame lower extreme one side, the installation pole is connected to U type frame one side lower extreme, PLC programmable controller installsin installation pole lower part, U type frame top center is installed horizontal rotary drum and is moved gear, horizontal rotary drum moves the gear top and installs sliding cart mechanism, the rack-track both ends all set up the track couple, the ventilation dryer includes dryer main part and dryer air outlet, is provided with dryer air outlet adjustment mechanism in the ventilation dryer. Theutility model discloses can be according to the tunnelling ventilation demand in different stages, dryer air outlet angle, bore and longitudinal separation adjusted to the science, create healthy comfortable operational environment for the personnel in the pit.