Abstract: In order to scientifically guide northern tea farmers to carry out freeze damage prevention, work of freeze damage observation, tea garden investigation, freeze damage investigation, expert consultation, tea farmers and expert panel discussion were carried out respectively, and process of 27 severe or severe freeze damage in Shandong tea area since 1966 was statistically analyzed, meteorological indexes of tea freeze damage grades in some southern provinces were studied and used for reference, and actual situation that frost resistance of tea trees has been significantly improved after decades of domestication after being introduced to the north was combined．Meteorological monitoring indexes for winter and spring tea freeze damage of tea plants in the north were formulated, and actual observation and verification were carried out．Results showed that meteorological monitoring indexes of freeze damage of tea trees could be used as scientific basis for guiding antifreeze of tea gardens in the north．