The invention belongs to the technical field of automobile windscreen wipers, and particularly relates to a rotary anti-blocking automobile windscreen wiper. The rotary anti-blocking automobile windscreen wiper comprises a rubber annular sleeve, a main driving plate, rubber scraping plates and a driving motor, wherein in the travelling process, when the windscreen wiper needs to work, the drivingmotor works to drive a second rotating shaft, a second gear, a third gear, a first gear, a soft driving shaft, the rubber annular sleeve and the rubber scraping plates to rotate, at the same time, thesecond rotating shaft rotates to drive the main driving plate, an arc-shaped connecting housing and an arc-shaped telescopic outer sleeve to swing, and the rubber annular sleeve during swinging can wipe a windshield glass of an automobile through the rubber scraping plates; and when the driving motor is in reversed rotation, the driving motor can drive the second rotating shaft, the second gear,the third gear, the first gear, the soft driving shaft, the rubber annular sleeve and the rubber scraping plates to be in reversed rotation, at the same time, the second rotating shaft rotates to drive the main driving plate, the arc-shaped connecting housing and the arc-shaped telescopic outer sleeve to swing, and the rubber annular sleeve during swinging can wipe the windshield glass of the automobile through the rubber scraping plates.