Realizing method of data multiplexing and virtual form

The method includes following steps: with band width of continuous data to be transmitted, determines holder group with adaptation volume comprising different class holders; the relevant holder in the holder group is inserted into data of continuous data band width service. The virtual cascade connection method is to use the data multiplexing method to multiplex the continuous data band width service into the holder, and to add virtual cascaded message into relevant virtual holder, and to transmit virtual cascaded message by using virtual cascaded way. At reception end, with the virtual cascaded message, the data of continuous band width service transmitted in virtual holder above can be received.