The Qianguo MS5.8 earthquake sequence from October 31,2013 to April 30,2014 were relocated and the seismicity characteristics of the earthquake sequence offered by the Jilin Digital Seismic Network were studied. The results show that the aftershock area is about 11km long in NW strike and 6km width in NE direction. The focal depth is mainly in 5～15km. Taking into account the regional structure features，the seismogenic structure involves the blind fault——The Tongyu-Changchun fault in NW striking. The sequence is characterized by low b-value，high-frequency of shocks with MS≥5.0 and a concentrated temporal distribution. The main activity of the sequence involves three periods. Ten days after the beginning，the attenuation of aftershock density was not obvious. For the two stages later，the seismicity shows characteristics of quiescence-enhancement-earthquake and enhancement quiescence-reenhancement-earthquake. The earthquake frequency with M≥3.0 and the frequency with M＜3.0 are disproportionate. The gram of G-R relationship shows two linear segments in the high and low magnitude phase respectively. Before the MS5.8 earthquake，the h-value was getting smaller and closed to 1，while after the MS5.8 shock，the h-value increased significantly. The p-value，a parameter of modified Omori formula，is small(p＝0.76)15 days after the MS5.5 earthquake，and this means that the sequence decays slowly. However after the MS5.8 earthquake，the sequence decays faster，and p-valve is 1.17.