The invention relates to the field of building structures. The technical problem to be solved of the invention is to overcome the defects in the prior art and provide a novel combined net support structure, which is used for fulfilling the aims of simple design computation, convenience for construction, high waterproofness, capability of bearing high loads and the like. The combined net support structure comprises a net support upper chord, a lower chord and a web member, wherein the upper end of the web member is connected with the lower side of the upper chord; and the lower end of the web member is connected with the lower chord. Improvements are that: the upper chord comprises an integral concrete plate and a steel structural beam; the steel structural beam is embedded into the integral concrete plate, and is at least partially arranged on the outer side of the lower surface of the integral concrete plate; and the lower chord and the web member have steel structures, and are connected with the lower side of the integral concrete plate through hollow ball gaps.