Abstract: To quantify the irrigation index of winter wheat during different growth periods in Wuqing, according to the meteorological monitoring data of Wuqing, Tianjin during 2009-2016 and agrometeorological observation data during 1988- 2016, the authors calculated effective precipitation by adopting the method recommended by Soil Conservation Service of United States Department of Agriculture, and also studied the water requirement and the irrigation requirement of winter wheat during 8 growth periods by utilizing the Penman-Monteith method recommended by FAO and introduced soil correction factor. The results showed that: the effective precipitation in Wuqing had been on decline in recent 8 years, and there was serious moisture deficiency during the seeding to maturity period and significant differences of irrigation requirement among different growth periods; in which, the largest water requirement appeared during the regreening stage to jointing stage and flowering stage to milk stage, and their maximum irrigation requirement was 59.95 mm and 57.08 mm, respectively, followed by tillering stage to overwintering stage and jointing stage to heading stage, their irrigation requirement was 39.38 mm and 34.50 mm, respectively. The water requirement of winter wheat during the whole growth periods was 251.94-328.00 mm, and the irrigation requirement was 189.65-292.53 mm. The water requirement and irrigation requirement of winter wheat of Wuqing have a trend of increasing every other year, but with no significant spatial differences.