Construction method, execution method and device of voice assistant

The invention provides a voice assistant construction method and device and a voice assistant execution method and device. The main method comprises the following steps: obtaining each service scene of a voice assistant to be constructed and an intention corresponding to each service scene based on user configuration; training an intention recognition model and an element entity extraction model through a corpus corresponding to the voice assistant in a corpus information base; for each intention, a task corresponding to the intention is obtained based on user configuration, and the task is used for triggering execution and obtaining response configuration corresponding to the voice dialogue after an element entity obtained through the voice dialogue meets element entity configuration information of the task; and constructing the intention recognition model, the element entity extraction model and the dialogue strategy model corresponding to each task into the voice assistant. By means of the mode, the voice