The main objective of the current study was to simulate and predict the future large-scale distribution and change possibility of L. migratoria tibetensis by using MaxEnt (the maximum entropy model). Based on current environmental factors, three climate scenarios in the future suggested by IPCC fifth report and current distribution sites of L. migratoria tibetensis, using MaxEnt and ArcGIS to predict the potential geographic distribution area and the change trend of L. migratoria tibetensis. Bioclimatic dominant factors were chosen by Jackknife test, while ROC was used to evaluate the simulation. Results showed that, under the present climatic conditions, the highly suitable distribution areas for L. migratoria tibetensis were in Sichuan Province and Xizang autonomous region, while the moderately suitable distribution areas were in west of Sichuan Province, east of Xizang autonomous region, and north of Yunnan Province. Under different emission scenarios in the future, the area, the center and the suitable distribution areas were all the different compared with the current situation. MaxEnt model is potentially useful for forecasting adaptive distribution areas of L. migratoria tibetensis under future climate changes, and it will provide an important guidance for the pest integrated management.