The invention provides a composite water pollution cleaning apparatus, comprising a body, an upstream sewage disposal unit obliquely arranged on the body, a downstream oil collecting unit obliquely arranged in the body and located below the upstream sewage disposal unit, a garbage conveyer belt arranged below the higher end of the upstream sewage disposal unit, an oil collecting well arranged at the lateral part of the garbage conveyer belt and an oil transfer pump arranged above and communicated with the oil collecting well. According to the invention, because of arrangement of the upstream sewage disposal unit and the downstream oil collecting unit, the composite water pollution cleaning apparatus can effectively clean solid garbage and liquid garbage floating on water; any flowable floating oil enters into a separator for separation and recovery; and high recovery efficiency and a good recovery effect are obtained.