The difference between Ermu Qinglong Pill and Ermu Ningxiang Pill is mainly in the composition of the drug, efficacy and contraindications. 1. drug composition is different: two mother clear lung pill by the mother, mother of pearl, rhubarb, before Hu, almonds, mulberry white skin, smallpox powder and other drugs composition. The two mother of the cough pill by the mother of pearl barley, mother of pearl barley, gypsum, fried gardenia, poria and other drugs. 2. efficacy of different: two mother clear lung pill efficacy is to clear heat and phlegm, moisten the lung cough, used for lung heat caused by cough and phlegm, cough and spit, mouth and nose sores, sore throat, constipation, yellow urine and other diseases of the treatment. The efficacy of Ermu Ning Cough Pill is to clear the lungs and moisten the dryness, dissolve phlegm and stop coughing, used for the cough caused by dryness and heat in the lungs, phlegm is yellow and sticky and not easy to cough up, chest tightness and shortness of breath, coughing for a long time, hoarseness and sore throat and other conditions of treatment. 3. Adverse reactions and contraindications: Ermu Qinglong Pill adverse reactions are not yet clear, but patients with wind-cold cough, spleen and stomach cold (spleen and stomach weak cold) should not be taken. Adverse reactions are not clear, but pregnant women are prohibited. 4. Precautions are different: Ermu Qinglong Pill should be used to avoid spicy, greasy food. Ermu Ning Cough Pill should avoid smoking, alcohol and spicy, cold, greasy food during the period of taking. If necessary, it is recommended to go to a regular hospital, under the guidance of a professional physician to identify the treatment.