Severe pneumonia is a relatively common serious disease, with rapid onset, rapid onset and high incidence. If there are many clinical complications without timely treatment, it may even lead to death of the patient, seriously affecting the health and life safety of the patient. Severe pneumonia is one of the most common diseases in the clinic, and the treatment of severe pneumonia is also relatively mature. In particular, infants and young children with severe pneumonia have rapid onset, rapid progress, and many complications. Anti-infection, supportive treatment and mechanical ventilation are important parts of clinical treatment. Mechanical ventilation is a sports breathing mechanism that replaces ventilators and controls or changes breathing methods. In clinical treatment of patients with respiratory dysfunction and respiratory support, the main use of mechanical ventilation is respiratory temperature, humidification, filtration, non-automatic sputum production, sputum storage and sputum production bacteria that may cause obstruction. Increased mechanical ventilation is associated with an increased risk of secondary associated pneumonia. Therefore, sputum should be combined with adjuvant chemotherapy to help patients expel secretions and sputum, inhibit bacterial growth, and keep the suction tract open. Traditional inversion and artificial back body drainage treatment are not effective, the impact frequency cannot be controlled, the impact force is not strong enough, the penetration force is not enough, and the sputum cannot be effectively discharged. Mechanical vibration sputum is a sputum treatment that relies on an oscillation field during the new medicine period. According to the direct violation of physics principles between design rooms, it has stable and uniform strength, low-frequency vibration frequency and penetration depth, and can make lung tissue function evenly Force, the specific treatment direction that produces periodic changes in the body surface of the patient’s body, it is perpendicular to the body surface, vibrates, can produce fluctuations, relaxes the liquid membrane to stand breathing and metabolizes, releases the sputum and vibrates evenly. In addition, the horizontal force is parallel to the body. Table, it can help the liquefied sweet liquid to choose according to the direction, effectively exercise and eliminate small airway secretions such as internal bronchus and metabolic waste, is conducive to ventilation, improves lung compliance, strengthens the role of respiratory muscles, and is also conducive to patient breathing It can promote blood circulation, relax skeletal muscles, improve blood circulation, breathing and blood oxygen saturation of the upper lung veins. The efficacy of vibration drainage combined with drainage in the treatment of severe pneumonia needs further study. This article mainly discusses the curative effect of phlegm vibrating instrument combined with body drainage in the treatment of severe pneumonia.