Abstract:The Oral Antiasthmatic Liquid ,when giuen into the mice stomach,can obviously reduce the times of cough in-duced by sulfur dioxide aerosol,and increase the amount of phenolsulfonphthaleui excretion of tracheas. It also showsantagonistic action to histamin phosphate and acetylcholine that can contract the isolated tracheas of guinea-pigs,andreduce the amounts of isolated lung and bronchial perfusion of guinea-pigs.