The utility model discloses a multi -functional engine oil drain pan assembly, it includes that the oil pan subtracts vibrating plate and oil sump two parts, the widen structural formation subtracted vibrating plate widen structure about the oil pan subtracted vibrating plate and is equipped with, and the oil pan subtracts vibrating plate and oil sump and passes through bolted connection, and the oil pan sealing washer through the centre design seals, and whole oil pan assembly passes through the bolt and installs on the engine body, the oil sump is the cuboid structure, and the bottom design has an oil drain plug screw mount pad, and under the prerequisite of guaranteeing leakproofness, functional, reliability, simultaneously integrated oil and gas separator oil return opening, machine oil filler, mechanical vernier scale installing port, oil sensor installing port, electronics machine oil pointer chi installing port in an organic whole not only can satisfy the structural arrangement of engine, whole car, realize real -time supervision, and still the maintenance provides reliable information, extension engine service life to the engine maintenance.