The invention relates to a solar energy and gas integrated heating device. The solar energy and gas integrated heating device is characterized in that an integrated built-in design is adopted, and a temperature difference automatic control system set by a multi-sensor fuzzy control mode is used for controlling solar energy and gas to carry out coordinated work. The solar energy and gas integratedheating device comprises five systems: a solar energy collecting system, an auxiliary heating system of a gas wall-mounted boiler, a hot water supply system, a heating system and a fuzzy control system. The fuzzy control system uses multi-sensor feedback information to realize fuzzy control. A fuzzy controller is set according to the solar energy priority and gas energy auxiliary program to realize the automatic control function of the system.