Iron golf club head structure with adjusted gravity center and method for adjusting gravity center of iron golf club head structure

The invention provides an iron golf club head structure with the adjusted gravity center and a method for adjusting the gravity center of the iron golf club head structure. The iron golf club head structure is provided with an iron club head and a balancing weight which can be combined with each other, the peripheral edge of the back of the iron club head is protruded to form accommodating space in an encircling manner, the size of the accommodating space corresponds to heads of corresponding numbers, at least two fasteners are arranged between the iron club head and the balancing weight to fasten the iron club head and the balancing weight, and fasteners or balancing weights with different sizes can be replaced according to requirements on hitting force or fine adjustment for the hitting gravity center. The iron club head and the balancing weight which can be combined can be replaced as needed, so that the gravity center can be finely adjusted; the fasteners can be screws or clamping components, so that the