A developable composite biological mesh containing barium sulfate and a preparation method therefor. The mass percentage of barium sulfate in the composite biological mesh is 15%-35%, and therefore, the composite biological mesh has better mechanical property and developing strength. The preparation method for the composite biological mesh comprises: (1) preparing a polypropylene solution, adding nano barium sulfate, and mixing the two well to obtain a polypropyleneano barium sulfate solution; (2) adding the polypropyleneano barium sulfate solution to a coagulating bath for phase inversion curing, takin out the product, washing and vacuum drying same to obtain a polypropyleneano barium sulfate composite; (3) extruding and granulating the polypropyleneano barium sulfate composite by means of a twin-screw extruder to obtain a composite biological mesh raw material; and (4) obtaining composite fibers by means of extrusion spinning by a single-screw extruder, weaving the composite fibers to obtain a developable composite biological mesh containing barium sulfate. The preparation method is simple and suitable for industrial production.
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