The invention provides an automatic retraction method for a parachute landing unmanned aerial vehicle. The landing site, the entry angle and the retraction altitude are sent to the unmanned aerial vehicle, and the unmanned aerial vehicle automatically plans a retraction airline and acts along the retraction airline; when the unmanned aerial vehicle approaches a retraction point, movement after engine shutdown is divided into a gliding section, a pull stopping section and a drifting section, a flight control program automatically queries the weight, speed and altitude of the unmanned aerial vehicle, the wind field and other conditions at the moment, and the shutdown position and the parachute opening position are worked out; a shutdown instruction and a parachute opening instruction are automatically executed. By means of the method, a parachute landing model can adapt to all altitudes from a low altitude to 5000 km or above like that of the Qinghai-Tibet Plateau, requirements for flight control precision and time accuracy are lowered, retraction precision is improved, wind measurement equipment and staff are not needed, staff are freed from the burden of wind measurement, calculation and control, and control over the unmanned aerial vehicle becomes easy and convenient.