The invention discloses a device, method and apparatus for encapsulating heterogeneous function equivalent bodies. The device comprises a redundant controller, an input proxy and an output proxy, wherein the redundant controller is used for generating a proxy strategy according to a control parameter, the input proxy is used for receiving an external service request and the proxy strategy, and establishing the communication connection with the heterogeneous function equivalent bodies, and de-collaborating a control relation between the heterogeneous function equivalent bodies, and distributing the external service request to the heterogeneous function equivalent bodies; the output proxy is used for receiving the proxy strategy and the output of the heterogeneous function equivalent body, selecting a target service response according to a normalization strategy and outputting to the external, and de-collaborating the target service response. The plurality of heterogeneous function equivalent bodies are encapsulated through the input proxy and the output proxy so that the device supports the adaption, the normalization, and the de-collaboration; an attacker communication link chain is chopped, so that the attacker is hard to sniff and use unknown defects or backdoor, thereby lowering the attacking success rate of the attacker to the information system.