To observe the efficacy of Lianhua Qingwen Capsule on lung infection.Methods:Sixty patients with lung infection were randomly grouped to control group receiving ceftriaxone sodium or Lavofloxacin Lactate, and treatment group receiving Lianhua Qingwen Capsule in additional to controlled medication for 7 days. To observe bacteria clearance rate, clinical manifestation, physical signs, total effective rate, and untoward actions respectively.Results:The bacteria clearance rate of the treatment group was 80.0% compared to 50.0% of the control group, the total effective rate of the treatment group was 96.7% compared to 83.3% of the control group (P<0.05). Untoward action incidence rate of the treatment group was 33.3% compared to 26.7% of the control group (P>0.05).Conclusion:Lianhua Qingwen Capsule is safe and has significant efficacy for lung infection.