The invention provides a head frame for golf bag and comprises an annular frame and a separator. At least one inserting part is fitted at inner side of the frame body with a slot with open side up and a guide block at one side of the slot. This separator has an annulus and a separating frame connected at the inner side of the annulus. The annulus can be inserted in the slot in a demountable way, while, the separating frame divides the inner side of annulus into several compartments for golf club placement. Whereby, users can select separators with different compartment quantities and assemble them on the head frame according to individual requirements for a good elasticity and light weight.