The invention relates to the field of insulating sleeves, and discloses a wind power motor insulating sleeve. The wind power motor insulating sleeve comprises a sleeve body (1), wherein the sleeve body (1) comprises three insulating pipes (2) penetrating and extending out of the sleeve body (1), each insulating pipe (2) comprises a first insulating strip (21) and a second insulating strip (22), two sides of each first insulating strip (21) and two sides of the corresponding second insulating strip (22) are respectively connected by means of a first circular arc segment (23), each first insulating strip (21) comprises a second circular arc segment (211) and straight line segments (212), the straight line segments (212) are fixed to two sides of the corresponding second circular arc segment(211), and the second insulating strips (22) are circular arc segments. The obtained wind power motor insulating sleeve is used for electrode insulation of a wind power motor, is moulded by casting ahighly-filled polyurethane material, has good performance, has density, tensile strength, elongation at break, temperature index, heat resistance grade, comparative tracking index and insulation resistance meeting the requirements, and achieves good using results.