The invention discloses a heterogeneous network multilink parallel mobile communication transmission system and method. The heterogeneous network multilink parallel mobile communication transmission system comprises a user interface control layer, a business logic control layer, a network control layer, a device management layer and a device control layer, wherein the user interface control layer, the business logic control layer, the device management layer and the device control layer are matched with one another, the network control layer is used for achieving network switching control, network protocol control, and data transmission control, the device management layer is used for achieving video and audio sampling control , coding and decoding, the device management layer is used for achieving modem identification and management, the device control layer is used for achieving video and audio sampling control, the business logic control layer is used for achieving business logic, and the user interface control layer is used for performing logic control. According to the heterogeneous network multilink parallel mobile communication transmission system and method, defects of low reliability, poor timeliness, large labor capacity and the like in the prior art can be overcome, so that advantages of high reliability, good timeliness and small labor capacity are achieved.