OBJECTIVE: To probe into the work pattern and effects of clinical pharmacists participating in comprehensive assessment of cancer pain in outpatient department of Sun Yat-Sen University Cancer Center.METHODS: Retrospective case-control study was adopted

74 patients who visited the pain clinic when clinical pharmacists had not participated in comprehensive assessment of pain from Oct. 2017 to Mar. 2018 were set as the control group（ cancer pain was assessed by physician after enrollment）

while 78 patients who visited the pain clinic after clinical pharmacists participated in comprehensive assessment of pain from Apr. 2018 to Sept. 2018 were set as comprehensive assessment group（ clinical pharmacist participated in comprehensive assessment of pain after enrollment）

changes of pain control

effect of pain on life quality and medication compliance were compared between two groups before enrollment and at 2 weeks after. RESULTS: At 2 weeks after enrollment

various indices of both groups had been significantly improved than before enrollment

and the changes of pain control

effect of pain on life quality and medication compliance of comprehensive assessment group were significantly better than those of control group

with statistically significant differences（ P < 0. 05）. CONCLUSIONS: Establishing a work pattern of clinical pharmacists participating in comprehensive assessment of pain in outpatient in a cancer specialist hospital can help improve patients’ medication compliance

significantly improve patients’ pain control and the effect of pain on their lives.