Objective Aiming at the issues such as solute loss during the freeze-point concentration of heat-sensitive liquid materials, a near-freezing point concentration device based on absorption membrane distillation is designed and fabricated. The feasibility of the device is verified using orange juice as the research subject.Methods A mathematical model of the device is established. Using orange juice as the feed liquid and lithium bromide solution as the absorption solution, this paper calculates and analyzes the variation laws of the concentration rate and energy consumption ratio of concentration with factors such as membrane pore diameter, membrane tube wall thickness, mass concentration of absorption solution, absorption solution temperature, mass concentration of feed liquid, feed liquid temperature, and ambient temperature.Results When the mass concentration of the feed liquid is 10% (the mass percentage of solids is 10%) and the ambient temperature is 25 ℃, the optimal parameter combination is a membrane pore diameter of 0.2 μm, a membrane tube wall thickness of 0.000 2 m, a mass concentration of absorption solution of 40%, an absorption solution temperature of 1 ℃, and a feed liquid temperature of 0 ℃. At this point, the concentration rate of the device can reach 0.599 kg/h, and the energy consumption ratio for concentration is 3.88 kg/(kW·h).Conclusion This technique can provide a new solution for high-quality concentration of thermal liquids such as orange juice.