The utility model discloses a multi -functional malleation filter, including protecting sheathing, protecting sheathing's upper end outer wall middle part fixedly connected with water inlet, the lowerextreme outer wall fixedly connected with fixing connection pipe of water inlet, fixing connection pipe's lower extreme outer wall fixedly connected with multiple -layer filtering net, and multiple -layer filtering net fixed connection is at protecting sheathing's intracavity lateral wall, the multiple -layer filtering net is including connecting catheters, heavy metallic membrane, active carbonfilter screen and lower part drain pipe, connecting catheters fixed connection is at the upper end outer wall of multiple -layer filtering net, the fixed intracavity lateral wall who establishes at the multiple -layer filtering net of heavy metallic membrane, lower part drain pipe fixed connection is at the lower extreme outer wall of multiple -layer filtering net, active carbon filter screen fixed connection is at the upper end of lower part drain pipe outer wall, the fixed dish that leaks of lower extreme outer wall fixedly connected with of multiple -layer filtering net, the lower wall scarf joint of the fixed dish that leaks there is the active carbon adsorption room. This practical easy operation, and have practicality.