The invention relates to a method for manufacturing a wind-rain vibration resistant embossing HDPE cable protecting sleeve. The method comprises: arranging a forming device on the outside of a machine head of a plastic extruder; extruding an HDPE circular pipe through 4 to 8 rollers which are evenly distributed on the forming device by circle, provided with convex nails on the outer edges and can rotate around a self axis by making use of the self residual heat of the HDPE circular pipe; making the outer surface of the HDPE circular pipe synchronously form concave pits which are arranged according to specified regulation and shape; and forming the HDPE circular pipe through cooling to obtain the wind-rain vibration resistant embossing HDPE cable protecting sleeve. The method makes full use of self heat of the HDPE circular pipe and has the advantages of energy resource conservation, convenient operation, good forming performance of the concave pits on the HDPE pipe and stable quality.