Abstract: The paper aims to promote the development of grape industry in Ningxia, enhance the meteorological service ability for grape production, and provide support for future lattice forecast and professional forecast services. Based on the hourly minimum temperature data of 27 automatic weather stations and 7 national observation stations of vineyard area at the east foot of Helan Mountain from April to May during 2009-2016, we compared and analyzed the differences of the minimum temperature between the automatic weather stations which were represented the chateau and the national observation stations in the area (abbreviation: Dajian Station). The results showed that the minimum temperature appearing at the east foot of Helan Mountain was from 20:00 to 10:00, with the majority in 03:00 to 08:00, and the occurrences at 07:00 were the most. According to historical data analysis and the comparison of actual cases, there was a significant difference between the minimum temperature of chateau station and national observation station, and the difference was generally within 3℃.