The invention provides a solar heat collection device and a control method. The solar heat collection device comprises a solar heat exchange pipeline, a first water tank and a water storage system. The solar heat exchange pipeline is provided with a solar heat collector and a heat exchanger, the heat exchanger is arranged in the first water tank and is subjected to heat exchange with water in thefirst water tank, the water storage system is communicated with the first water tank, and the first water tank is further provided with a water outlet for providing hot water for a user. According tothe solar heat collection device and the control method provided by the invention, the temperature set by the user, the temperature of the solar heat collector and the temperature of the water tank temperature can be comprehensively compared, and heat exchange can be performed in the first water tank and/or a second water tank according to the comparison result, such that according to the difference of the temperature set by the user, the temperatures in the first water tank and the second water tank may be different, the purpose of different temperatures of different intervals is met, by temperature sensors, the water temperature in the first water tank can be enabled to reach the set temperature, and the use rate of solar energy is increased.