The invention discloses a work head which is capable of being installed on an output shaft of a power tool. The work head is provided with an installation part which is matched with the output shaft and a center hole with a center is arranged on the installation part, and a a matching surface which faces towards the output shaft is arranged on the installation part, wherein a concave part is formed in the installation part around the center from the matching surface, a bottom surface is arranged on the concave part, an inner portion installation hole is formed in the installation part from the bottom surface along a direction of moving away from the matching surface, the inner portion installation hole and the concave part are capable of being respectively connected with at least two types of the output shafts in a matched mode so as to improve generality of the work head greatly.