Objective To investigate the time of drug use and dose accuracy in middle aged and elderly patients with COPD to develop pharmaceutical care intervention. Methods 100 middle aged and elderly patients with COPD were selected from the department of traditional Chinese medicine, randomly divided into intervention group and control group, the intervention group was developed pharmaceutical care including taking part in setting of therapeutic schedule, pharmaceutical measurement and guide of drug use in patients, health education, regular visit etc. The control group did not have pharmaceutical care intervention. Results The time of taking medicine compliance was (97.89±1.11)% and dose accuracy was(99.95±0.05)% in the intervention group. The intervention group had significantly improved compared with the control group. The course of treatment was(11.12±2.1)days. The average course of treatment was shorter than the control group. The difference was statistically significant (P<0.05). Conclusion Medication compliance of middle aged and elderly patients with COPD is higher by pharmaceutical care from the pharmacists. The course of treatment is shortened. It is worth using widely.