laser smart intelligent agriculture grade system is electric control equipment designed special for such as glebe and paddy field big area grad machines. be applicable to the precise control of farmland grader, carry-scraper, bulldozer and flat ground machine. that system gathers the numeral control, colorful touch pc, laser swinger, laser examination, electricity liquid pwm control, canbus the spot total line, gps satellite fixed position, the gsm long-distance data deliver etc. currently most developed technique in integral whole, carried out a control, measure, orientation etc. all functions of the whole even farmland grade project.