Abstract: A wireless LAN camera having digital signal boosting function and the system processing module thereof are proposed. The wireless LAN camera comprises a wireless LAN interface module, a system processing module, and an image sensor. The system processing module comprises a microprocessor connected to the wireless LAN interface module. The microprocessor manages scheduling and execution of all functional operations, and is used to modify parameters of an external package received by the wireless LAN interface module and then transfer it out via the wireless LAN interface module. An image processing interface connected to the microprocessor provides connection with the image sensor for processing an image signal inputted by the image sensor. The image signal is sent to the microprocessor for processing and then converted into an image package sent out via the wireless LAN interface module.