Objective To study the correlation between sleep structure and depression in patients with different types of cerebral infarction,to provide new ideas and theoretical support for the treatment of sleep disorders and depression in patients with cerebral infarction. Methods 124 patients with cerebral infarction in our hospital from April 2012 to May 2015 were selected. They were divided into four groups according to the different parts of the cerebral infarction, respectively, 30 cases of cerebellar infarction group, 33 cases of cortical infarction group, 29 cases of brainstem infarction group and 32 cases of subcortical infarction group. The correlation of sleep structure and sleep parameters, sleep disorder and HAMD score of the four groups were observed and compared. Results There was a significant difference in sleep structure between the four groups. Brainstem infarction group and subcortical infarction group awakening time was far more than that of cerebellar infarction group and cortex infarction group.Cerebellar infarction group NREM 1+2, NREM period was significantly shorter in cortical infarction, brain stem infarction group and subcortical infarction group. Cerebellar infarction group of REM and NREM stage 3+4 were significantly greater than that of cortical infarction death group, brain stem infarction group and cerebral cortex infarction group. The differences were statistically significant(P<0.05);HAMD score, PSQI score and NREM1+2 period, arousal index was positively correlated (P<0.05, r> 0); And REM phase and 3+4 NREM phase was negatively correlated (P<0.05, r< 0). Conclusion Subcortical infarction sleep structure disorder incidence is higher, and the sleep structure changes and infarction depression score, sleep disorder score has a certain relationship.