Low temperature test on the air spring is an important means for improving alpine EMUs bogie dynamic performance. Low temperature working condition of air spring was analyzed briefly, and air spring full two-dimensional load testing scheme at low temperature was designed and compared to normal and half low temperature test scheme, by which the low temperature air tightness and vertical stiffness and lateral stiffness of air spring was studied. Research result showed that: the design of experiments was consistent with the actual working condition, and the low temperature two-dimensional load testing scheme could more accurately reflect the mechanical properties at low temperature of air spring; with the temperature decreasing, air spring vertical and lateral stiffness increases, and low temperature air tightness could meet the requirements.