Abstract: Oil or gas-fired heaters used to heat crude oil will result in energy waste and environmental pollution. A high-temperature heat pump which takes the solar energy and heat from re-injected water heat exchange as the low-temperature heat source and electric heater as the alternative heat source can be used for the cyclic heating of crude oil gathering, saving energy and reducing emissions, thereby. Mathematical models of solar thermal collectors and high-temperature water source heat pumps are respectively set up using Matlab's Simulink simulation technology, and then field running parameters are inputted for simulation. Based on these simulations, researchers can predict the running conditions of solar and heat pumps'joint heating systems, and make an economical efficiency comparison between simulation running results and other heating systems. Results indicate that solar energy and high-temperature heat pump joint heating systems can produce heating temperatures up to 75 ℃, a heating coefficient of 3.5, and annual running costs of 40.23×10⁴ RMB less than those of electric boilers. The investment can be recovered within 14 months, characterizing a significant economy