The invention discloses a sole mould structure. The sole mould structure comprises a first mould, a second mould and a movable inner core group, wherein the top of the first mould is a first sealed surface, two first mould cavities are formed in the first sealed surface, and an inner core is arranged in each first mould cavity; and two first through holes, two second through holes and third through holes are formed in the second mould. The sole mould structure disclosed by the invention is time-saving and labour-saving, capable of separating the inner cores of a sole from a male mould, not liable to cause damages of the sole, and capable of producing thin soles.