Cogongrass rhizome, reed rhizome, bamboo leaves, selfheal, Su Hua and chrysanthemum have the effects of clearing away heat and toxic materials, clearing away heart-fire, relieving restlessness, clearing liver-fire, improving eyesight, stopping bleeding and resolving phlegm. Clinically, it can be used for cold diseases caused by exogenous wind and heat. Patients often have itchy eyes, red eyes, dry mouth, dry throat, repeated cough, expectoration, chest tightness, hemoptysis and other symptoms.