Based on the analysis of the spatial-temporal distribution of dust weather, the wind fields, and the AI(Aerosols Index) at 90 stations over the past 20 years, the occurrences and transport pathways of dust weather in this region are identified. Permanently dusty land was the source of most blowing sand weathers on the peninsula, beginning to expand in February and peaking in June. The distribution of floating dust was similar, but with another high-value center in the northern Hijaz Mountains, connecting with the high-value area of permanently dusty land in March, reaching its maximum area in June-July, after then shrinking and splitting into several small parts. The AI Index was distributed as a "down arrow" relatively high value center, with an evident unimodal distribution. The intensity and area of AI reached a peak in June. From October to April and from May to September, the wind direction in the peninsula respectively shifted clockwise and counterclockwise, driving dust transport downstream. Synoptic analysis showed that with the cold front invading the peninsula the cold air moved quickly from the north lifting the warm air, which was the main reason for the dust weather. The backward trajectory clustering analysis presented three transport routes over the peninsula, to the Sahara desert in the northwest direction, from Iraq or Iran by counter cyclone field, and the local transport.