The invention discloses a multifunctional voice control system. The multifunctional voice control system comprises a power supply module, a Bluetooth module, a control module, a monitoring module, a connection module, a display module and a voice warning module, wherein the power supply module is electrically connected with the control module and the monitoring module. Through cooperation of the monitoring module, the control module and the voice warning module, the collection assembly can collect pictures of people or animals approaching a voice warning device, then images of people or animals are recognized through the recognition assembly, and finally voice playing signals corresponding to people or animals are transmitted to the control module through the transmission assembly; the voice warning module is controlled by the control module to play a warning corresponding to a person or an animal so that the voice warning device has the capability of automatically identifying the animal and the person; through cooperation of the Bluetooth module and the control module, a mobile phone is connected with the voice warning device through Bluetooth signals, and the voice warning device can be conveniently controlled to work through the mobile phone.