Full-automatic treatment system and treatment method for treating rainwater into drinking water

The invention provides a full-automatic treatment system and method for treating rainwater into drinking water. The system comprises a rainwater storage device, an aeration device, a multi-layer composite adsorption device, a treated water temporary storage device, an advanced treatment device, an ultraviolet disinfection device, a clean water tank, a solar power supply system and a Z-Wave intelligent network system. When rainwater is treated, the rainwater enters the rainwater storage device and the aeration device to eliminate generated gas and peculiar smell in the rainwater; then the rainwater enters a multi-layer composite adsorption device through a water pump, and particulate matter, heavy metal and organic matter in the water are removed; the filter pump transfers the rainwater in the treated water temporary storage device to the advanced treatment device, the rainwater is further subjected to advanced treatment, and the rainwater subjected to advanced treatment enters the ultraviolet disinfection dev