The embodiment of the invention discloses a vehicle-mounted voice instruction recognition method and device. The method comprises the steps: obtaining a voice instruction inputted by a user; determining the basic information of the user according to a pre-trained DNN (deep neural network) model; recognizing the contents of the voice instruction according to the basic information of the user, and determining at least one possible intention of the user according to the recognized contents and the context of a scene page where the user inputs the voice instruction; determining the confidence of the possible intentions of the user according to the DNN model; determining the true intention of the user from the possible intentions of the user according to the confidence; and carrying out corresponding operation according to the true intention of the user. The method and device provided by the embodiment of the invention can effectively improve the recognition accuracy of the voice instruction.