Abstract: Using data of crustal thickness and Vp/Vs ratio calculated from teleseismic waveforms recorded by 5 temporary stations and collected from previous studies in the Jilin Province, we analyzed the crustal structure in different geologic units. The results show that the average crustal thickness in Jilin Province is 32.57km with thinner crust in the middle; the average Vp/Vs is 1.768 with higher values in the eastern part; crust thickness in Changbai Mountain area is higher than that in the Songliao Basin, whereas the Vp/Vs ratio is lower than that in the Songliao Basin. The crustal thickness in the Changbai Mountain area is thin in the west and the Vp/Vs ratio shows small variation, thin crust with high Vp/Vs ratio appear in the volcanic eruption area. In the Songliao basin area, thickness is thin in the east and the Vp/Vs ratio is high in the east, the Songyuan and QianGuo areas with dense earthquakes show large lateral changes in the crustal thickness and high Vp/Vs ratio. Crust with the thinnest thickness and the highest Vp/Vs ratio is in the Songyuan area in the Jilin Province.