Domestic bulldozer on handling, comfort, energy efficiency, noise, pollution, construction quality and productivity and other indicators have lagged behind the world advanced level, in many advanced technologies, structures, materials and technology there is a big gap, inadequate control technology mainly in microelectronics applications, hydrostatic transmission technology applications and electro-hydraulic servo control technology applications for further study and improvement of automatic leveling technology is based on C Xing global positioning systems, laser, ultrasound and other precision auto-leveling technology push Application of soil technology needs further promotion and application.