The invention relates to a head of golf club with the material of damping capacity for damping the concussion wave, better damping effect and not influencing the control of hitting golf. The invention comprises a hollow main body, a hitting ball panel combined on the main body, a cover and a damping material. Wherein, the side end of main body has a combining base for fixing the end of golf club; two separated plates are spaced mounted near the hitting-ball panel inside the main body to form a cavity with the hitting-ball panel while gas holes through with the inner part of main body and the cavity are arranged on the separated plates; the combining base has through holes which is through to the cavity; and damping material is filled in the through hole and glued on the inner part of cavity.