Abstract: The aim was to judge appropriate plant area of high acid Begonia. The cold resistance of high acid Begonia new varieties‘bingxin-1’,‘hongxun-1’and that of the existing variety‘xinping-1’were compared. The branches were used as test materials with low-temperature processing. According to electrical leakage, the change of proline and MDA content, the cold resistance of various samples was studied. The results showed that the relative conductivity of the three varieties was‘xinping-1’＞‘hongxun-1’＞‘bingxin-1’. Proline content from high to low was as follows:‘bingxin-1’＞‘hongxun-1’＞‘xinping-1’. MDA content from high to low was as follows:‘hongxun-1’＞‘xinping-1’＞‘bingxin-1’. In conclusion,‘bingxin-1’had the highest cold resistance, the cold resistance of the three varieties was as follows:‘bingxin- 1’＞‘hongxun- 1’>‘xinping-1’.‘bingxin-1’and‘hongxun-1’had higher cold resistance ability, and were suitable for planting on north of Tianshan Mountains in Xinjiang and other cold regions.