Developed by Changsha Institrte of Mining Research,NEOCON oil suspen-sion is the 5th generation of new product;It has good performane of shock load separa- tion,and stable and controllable working The vehicles with NEOCON oil suspension cankeep the stable working in the serious operating environment, on the uneven road and un- der conditions of high temperature- head weather and unstable load.The desing criteria andbasic considerations of supporting cylinder of NEOCON oil suspension and the comparisonof NEOCON oil suspension performance with oil gas suspension are analyzed in detail inthis paper. It is pointed out that NEOCON oil suspension has incomparable advantage overother suspensions.