The invention discloses a hub motor lead device which comprises a male head assembly and a female head assembly. The male head assembly and the female head assembly are connected in a butting mode and fixed together through a shell helical casing. A male head Hall socket in the male head assembly and a female head Hall socket in the female head assembly are meshed, and a male head three-phase socket in the male head assembly and a female head three-phase socket in the female head assembly are meshed. A Hall lead male head and a Hall lead female head are connected in an inserted and matched mode. A three-phase lead male head and a three-phase lead female head are connected in an inserted and matched mode. The lead device convenient to use is provided for a hub motor, a lead inside a motor spindle can be effectively fixed, and the hub motor lead device has the certain waterproof sealing function, and is compact in structure, and convenient to assemble and disassemble.