The utility model discloses a multifunctional socket has solved when filling cable inserting USB and charging mouthful, fills wire -terminal and receives that breaking away from appears in collision easily or cracked problem. Its technical scheme main points are multifunctional socket, including detachable connections's of each other first casing and second casing, are equipped with socket panel, alarm indicator, on & off switch and signal indication lamp on the first casing, and the second casing is equipped with and participates in, louvre and USB charge the mouth, and the second casing is equipped with and holds the recess that fills wire -terminal, and USB charges mouthful setting in the recess. The mesh that prevents to insert charging cable plug that USB charges mouthful and receive the collision has been reached.