Abstract: The growth status of natural herbage in Zoige wetland is largely restricted by the meteorological condition in the region. In order to evaluate the advantages and disadvantages of the herbage growing season from the perspective of the climatic condition, the paper consulted the observation data of the natural herbage yield in Zoige wetland over the past 31 years from 1983 to 2013 (no available data in 2002), obtained the meteorological suitability index that could reflect the impact of light, temperature and water on the growth of herbage, and analyzed the relationship between the natural herbage yield and the meteorological factors in Zoige wetland, and built the evaluation models for showing the linear and growth curve of herbage yield and meteorological suitability in May, June and July respectively. The results showed that: the evaluation model for the herbage yield and meteorological suitability could better simulate the evolution trend of herbage yield; the accuracy of the linear model for the herbage yield and meteorological suitability for each month was generally higher than that of the growth curve model; the accuracy of raw weight model was poorer compared with that of dry weight model. Due to the restricted accuracy of the observation data of herbage yield, the estimation models for the herbage yield in June and July also need to be improved.