Abstract: The research on agricultural water quota is of great significance for promoting water conservation, rational allocation and utilization of water resources, and improving the effective utilization coefficient of irrigation water. Based on the work of industry water quota compilation in Gansu Province in 2022, this paper revises and evaluates the water quota for vegetable irrigation in typical irrigation areas in Gansu Province. On the basis of collecting and investigating the water consumption data of each typical irrigation area, the agricultural irrigation zones are re-divided according to the natural geographical and climatic conditions in Gansu Province, and the general value and advanced value of the water quota for vegetable irrigation are analyzed and calculated by empirical method, statistical analysis method and analogy method. The research shows that（1） based on the precipitation isoline and drought index isoline, the agricultural irrigation zoning method is put forward, which takes geographical zoning and other factors affecting agricultural irrigation water into consideration. Gansu Province is divided into five agricultural zones, which is more in line with the geographical distribution and climate characteristics of Gansu Province than the current zoning, and can better reflect the differences in agricultural irrigation water use between different regions.（2）The water quota for different kinds of vegetables in each agricultural irrigation zone is between 27 00 and 9 300 m3/hm2. The maximum quota for onions is 3 750to 9 300 m3/hm2, and the minimum quota for vegetables in solar greenhouse is 2 700 to 5 700 m3/hm2. The vegetable quota of agricultural irrigation zones shows three trends: high, medium and low, most of which are located in the middle, and the trend of change is consistent with the characteristics of plant growth and agricultural water-saving.（3） The water quota for vegetables in different agricultural zones varies greatly, which is shown as increasing from the east to the west and from the south to the north. The Hexi Corridor is larger than the eastern Longdong Plateau, and the central Longnan is larger than the southern Longnan, which basically conforms to the distribution law of precipitation isoline and the characteristics of regional farmland irrigation.（4） Using the quantitative evaluation system, it is concluded that the coverage of vegetable irrigation quota in Gansu Province is “reasonable”, the practicability is “strict”, the rationality is “strict”, and the progressiveness is “reasonable”. The revised vegetable quota standard has significantly improved in “four properties”.