To improve the test ability of high-speed train aerodynamics, a new moving model rig was established in Institute of Mechanics, Chinese Academy of Sciences in 2014, in which the train model is accelerated indirectly by high compressed air and decelerated by the induced non-contact magnetic force. The rig can finish the aerodynamic tests of 1:8 scale three-car train models to the speed of up to 500km/h for single-train and two-train passing by each other in tunnel or in open air. In the past two years, for the rig, pressure measurement systems on tunnel model and on moving train model have been developed, and aerodynamic force measurement systems on the moving train model also have been preliminary realized. In the paper, the design principle of the rig and some experimental results will be emphatically reported. (1) The pressure waves are measured along the single-track and double-track tunnel models of Chinese railway standard with 76m2 and 100m2, respectively. The propagation and superposition characteristics of tunnel pressure waves are investigated. It is indicated that the instantaneous pressure waves are agreed with the calculated results and are corresponded with theoretical analyses. (2) The pressure distributions on the train model with different test speeds and different running scenes are measured. For the running scene of single-train in open air, the measuring pressure distributions agree very well with the CFD simulation. For the running scenes of single-train or two-train passing by in tunnel, the good correlation of the instantaneous pressure waves on the train model and on the tunnel wall can be obtained. (3) Because the development of aerodynamic force balance for the moving train model is completely different with the traditional balance for the wind tunnel test, up to now, only steady aerodynamic drag and lift coefficients for single-train running in open air can be measured and compared with CFD calculation. The measuring balance for instantaneous aerodynamic forces such as two-train passing by each other in the open air, single-train or two-train passing by in tunnel needs to be further improved.