The utility model relates to a vapor pressure machine for pressing tea. The vapor pressure machine comprises a portal frame, an air cylinder, a one-way valve, a silencer, a tea-pressing face plate, a buttering face plate, an adjustable die, a stressed cake and a manual switch. The vapor pressure machine provided by the utility model has the advantages of rapidness, simplicity, convenience and standardization in operation. No more experience or technology is necessary, the traditional process of pressing tea by a stone mill is eliminated, the processing time is shortened and the consumption of resources is reduced. In addition, the molded tea which is pressed by the vapor pressure machine is characterized by normalization, standardization, low loss and high qualification rate. The error which is caused by manual processing is reduced and meantime, the capacity is increased, the labor cost is saved and the production efficiency by unit time is increased.