摘要： The dimension of moduli space of complex 5-dimensional complete intersections are calculated by using the formula of Bru?ckmann. With the method of Libgober and Wood of generating larger sets of homeomorphic or diffeomorphic complete intersections from pairs - d and - d ′, for specific multidegrees, it is shown that the dimensions of moduli spaces of corresponding diffeomorphic complex 5-dimensional completeintersections are all be different.