The invention relates to the technical field of wheel speed sensors and in particular relates to a general fast-mounting wheel speed sensor and a mounting method thereof. The sensor provided by the invention is characterized in that a plurality of equilong annular wire ropes with fasteners and jackets are simultaneously tightened around hub process holes and becket disc equipartition holes at equal angular intervals, so that a wheel speed sensor main body can be naturally positioned in the center of a hub axle; and a magnetic bracket of which the height can be changed according to the protrusion height of an axle cover and a general chassis with equipartition grooves and spacer rings constitute a chassis bracket which is applicable to front and back hub axles of various trucks, trailers, passenger cars and sedan cars. Compared with the traditional wheel sensor provided with a movable joint, a sleeved connecting rod and a vacuum chuck positioning encoder shell, the wheel speed sensor provided with a rubber string and a vacuum chuck positioning encoder shell has the advantages of firm positioning, low flutter, high adaptability, simple structure, convenience and rapidness in mounting, light weight, good reliability and the like.