The invention provides an adapter assembly capable of preventing hoses from shedding accidentally and relates to adapter assemblies for hydraulic equipment. The adapter assembly particularly comprises a flange ring, a seamless steel pipe, a tail core and an adapter, wherein the seamless steel pipe is connected between the flange ring and the tail core, the tail core is fixedly welded with one end of the seamless steel pipe by means of friction welding, the other end of the friction welding is fixedly welded with the flange ring by means of friction welding, the adapter is provided with a clamping stop strip, the tail core is provided with a groove, and the clamping stop strip matches with the groove to enable the adaptor to be connected with the tail core. The adapter assembly capable of preventing the hoses from shedding accidentally has the advantages that the adapter assembly can adapt to different sizes of hoses through the design of the adapter, and can be reliably connected with one hose modified in size by replacement of the adaptor; with structural optimization design, the adapter assembly is more convenient to match with external rubber hoses and sleeves more conveniently.