A golf club head includes a body and a striking plate. The body includes a recess in a front side thereof. A plurality of positioning protrusions project from a perimeter of the striking plate. When the striking plate is inserted into the recess of the body, the positioning protrusions plastically deform and engage with an inner perimeter delimiting the recess, thereby positioning the striking plate in the recess and simplifying assembling and positioning for a subsequent welding procedure. In another embodiment, the positioning protrusions project from the inner perimeter delimiting the recess, and when the striking plate is inserted into the recess of the body, the positioning protrusions plastically deform and engage with the perimeter of the striking plate.