Tribenuron-methyl is an important sulfonylurea herbicide controlling broad leaved weed used in wheat field in China. The processes for preparation of tribenuron-methyl and its key intermediates were reviewed. Comparing the yield,quality,cost,safety and environmental protection and other aspects,the best production process of tribenuron-methyl is to use the methyl 2-(chlorosulfonyl)benzoate and sodium cyanate as raw materials.