Abstract: Discussing the assessment method of agrometeorological year’s harvest of sugar beet aims at providing guidance for agricultural production, planting plan adjustment and cultivation management of sugar beet. With the yield and sowing area data of 11 sugar beet cultivation regions from 1986 to 2012 in Heilongjiang, as well as the daily air temperature, precipitation and sunshine time data of the same term, and based on the climatic suitability index method and weighted coefficient method, the authors built the stepwise regression models of the agrometeorological year’s harvest of sugar beet for these regions, and the assessment model of weighted coefficient method in Heilongjiang. The results showed that: there were significant correlations between the value Fi of the agrometeorological year’s harvest of sugar beet and the comprehensive climatic suitability index of the key growth period, the correlative coefficients passed a significant statistical test of above P<0.02, the retrospective test correct rate in the 11 cultivation regions was 73.7%-88.5%, and that of Heilongjiang was 81.0%. The average correct rate of the forecast test in the study regions was 76.9%, while that in Heilongjiang was 100% in 2013, the forecast and actual agrometeorological year’s harvest of sugar beet were all ordinary in 2013. The correct rate of the constructed agricultural meteorological year’s harvest model in Heilongjiang, which was based on the climatic suitability index method and the weighted coefficient method, is relatively high, and can be used for agricultural meteorological year’s harvest assessment, and agrometeorological forecast and service in Heilongjiang.