An object-oriented management device for ASN.1 message is provided, which includes: an ASN.1 bottom supporting module for compiling the ASN.1 message into programming language example code; a common manipulation module for processing the message to support the message applications; a message plug-in for creating the message corpus plug-in from the code generated by the common manipulation module, with the class description table being the plug-in interface. The present invention solves the problem that the message structure example should be re-established after the message is persistently saved, overcomes the disadvantage that the data type of the bit stream must be known in advance for decoding, decreases the difficulty of message construction, and significantly lessens the workload of the message development and maintenance.