NOVELTY - The system has a heat exchange device and a cooling tower. A water conditioning tank, valves, a digester, biogas generators, intermediate tanks, programmable logic controller (PLC), heat pipes, an alkali liquid tank, dosing pumps, a cooling tower, back pumps and a heat valve are connected with each other. An outdoor water supply network, a flushing apparatus, the water conditioning tank, the valves, the digesters and an outdoor drainage network are connected with each other. A sewage regulating tank and the digester are respectively connected with two temperature sensors.    USE - Toilet sewage recycling and energy recovery system.    ADVANTAGE - The system realizes automatic anaerobic digestion parameter adjusting function, high domestic sewage utilization rate.    DETAILED DESCRIPTION - The system has a heat exchange device and a cooling tower. A water conditioning tank, valves, a digester, biogas generators, intermediate tanks, programmable logic controller (PLC), heat pipes, an alkali liquid tank, dosing pumps, a cooling tower, back pumps and a heat valve are connected with each other. An outdoor water supply network, a flushing apparatus, the water conditioning tank, the valves, the digesters and an outdoor drainage network are connected with each other. A sewage regulating tank is provided with a first temperature sensor. The digester is connected with a second temperature sensor, a pH sensor and the alkali liquid tank, the dosing pump, the outdoor water supply network, the heat exchange device, a cooling tower and the outdoor drain pipe network. The cooling tower, a cold water tank and the water pump are connected with the heat exchange device. A hot water pipe is connected with one end of an intermediate water tank. Other end of the intermediate water tank is connected with the digester. The hot water pipe is connected with a hot resisting valve, a marsh gas outlet and the bio gas generator. The biogas generator, the cooling tower, the water pump, the first and second temperature sensors, the pH sensor, the alkali liquid tank, the dosing pump and the digester are connected with the PLC. A sludge discharge pipe is connected with a bottom part of the digester through a mud valve. The digester is equipped with a stirrer. An INDEPENDENT CLAIM is included for a toilet sewage recycling and energy recovery method.