Recently, CAERI made another breakthrough on durability test of key component and system, and successfully developed 2 kinds of 6 channel knuckle road simulation test both loading at wheel side and body side. The two tests further demonstrate the leading level of CAERI on road simulation test. CAERI already has ability of simulation test of tie rod (single axis), lower control arm assembly two axes, etc. CAERI have cooperated and provided technical services with domestic and foreign enterprises. The success of the tests will promote the development of auto parts reliability test to road simulation test.