Objective To explore the clinical effects of continuous low-negative pressure drainage in the treatment of chronic subdural hematoma( CSDH). Methods From October 2014 to October 2016,minimally invasive treatment of 31 patients with chronic subdural hematoma were performed by continuous low-negative pressure drainage. Results There were significant differences( P < 0. 05) in hematoma volume,extubation time and recurrence of hematoma between intervention group and control group. Conclusions We designed a sing...