Breath training aid

The utility model provides a breath training aid, belongs to medical apparatus technical field. It is connected with the one -way valve valve to suck the ware, the air duct is connected to the other end of one -way valve valve, the air duct is the hose, the liquid level pipe is connected to the other end of air duct, the bottle lid is connected to the other end of liquid level pipe, fluid reservoir and blast pipe are connected to the bottle lid, fluid reservoir's body has the bottle scale mark, the bottom face level of scale zero and liquid level pipe, upwards mark out the scale according to length centimetre (a cm), every 1cm department is a little marking, every 5cm is a big marking, stop the marking to 25cm department, the other end of blast pipe and liquid level pipe passes the bottle lid and stretches into in the fluid reservoir, and it is fixed with the bottle lid, can not move about. The utility model discloses install one -way valve, can prevent that the patient from inhaling in the mistake of breathi