Abstract:Based on the compiled data of tropical cyclones from 1949 to 2019 provided by the Shanghai Typhoon Institute of the China Meteorological Administration, a statistical analysis was conducted on the occurrence time, frequency, intensity, and movement tracks of tropical cyclones affecting Heilongjiang over the past 71 years. Results indicate that there were a total of 77 tropical cyclones affecting Heilongjiang in the past 71 years, with an average of 1.08 cyclones per year. Among them, there were 28 years without any tropical cyclone impact on Heilongjiang. The past decade was an active period for tropical cyclone impact on Heilongjiang, but there was no direct correlation between the frequency of tropical cyclones generated in the northwest Pacific and the frequency of their impact on Heilongjiang. The occurrence of El Niño or La Niña phenomena had inhibitory effects on the tropical cyclones affecting Heilongjiang. The earliest occurrence of tropical cyclone impact on Heilongjiang was in May, the latest in September, and August had the highest frequency of occurrence, representing the most active period each year. In terms of intensity, super typhoons had the highest impact on Heilongjiang, but their occurrence has been decreasing in recent years, with more lower-level tropical cyclones maintaining a longer northward trajectory to affect the region. Mudanjiang City is the area most susceptible to the impact of tropical cyclones in Heilongjiang. The tropical cyclones affecting Heilongjiang can be divided into two categories based on their movement tracks:northward-moving tropical cyclones and eastward-biased tropical cyclones. Among them, northward-moving tropical cyclones can be further classified into seven types, with the most frequent occurrence being the eastward turn after passing through the Korean Peninsula, but their impact on Heilongjiang is relatively small. Northward movement through the Korean Peninsula, but their impact on Heilongjiang is relatively small. Northward movement through the Korean Peninsula and eastward turn at high latitudes are more likely to bring severe wind and rain impacts to Heilongjiang.