Abstract: Hetian oasis located at the south edge of Taklimakan Desert was selected as the study area, and the 36 h of the backward trajectory of air parcel at the ending point (79.72°E, 37.26°N) for 2891 dusty days in the period of 2004-2018 were simulated by using HYSPLIT backward trajectory model and NCEP-GDAS global meteorological data. The transport pathway and meteorological characteristics of air parcel in dusty days were quantitatively analyzed by using k-means clustering technique. The results showed that there was no significant variation in the annual frequency of dust storms from 2004 to 2018, and there was no obvious increase or decrease trend. Spring and summer (from March to July) were the main dusty seasons, accounting for 70.2% of the total dust weather in the whole year, with May and June being the most active periods of strong dust storms. During the dust weather, the movement height and trajectory pathway of air parcel were quite different. The trajectories of dust storms arriving at Moyu County were categorized by k-means clustering into 4 clusters, NW-W cluster, N-N cluster, NE-E cluster and E-ES cluster, which showed distinct features in terms of the air parcel origins and the entry direction to the study site, and their frequencies were 18.9%, 12.3%, 60.1% and 7.8%, respectively. Among them, air masses arriving at the study area from east to west showed the highest frequency (60.1%), and it was mainly floating dust weather. The frequency of dust from northwest to southeast was not high, but the moving speed was the fastest, and strong dust storms and sand blowing mainly came from northwest and west. The dust storms from north to south had the slowest speed (1.36 m/s), the lowest air humidity (26.4%), and the highest temperature (292.58 K). The different transport pathways of dust storms in Moyu County were quantitatively confirmed, which could provide a reference for the study of dust storms in the oasis area.