Based on observation data of 59 agro-meteorological stations in North China Plain during 1981-2010, response of flowering and maturity stage of winter wheat to global warming was investigated. The results showed that there exits marked variation in the flowering and maturity stage of winter wheat in North China Plain during the observation years. In Comparison with 1980s, the flowering date of 1990's had been moved up by 2~5 days, and the maturity date 1~6 days in advance. For 2000s, the flowering date was 3~9 days in advance, maturity date 1~7 days. Therefore, there is an increasing trend that both the flowering and maturity dates had been moved up, partially associated with the average monthly temperature from March to May.