The invention discloses a collection type blowout preventer applicable to the tracheostomy catheter of a tracheostmy patient. The collection type blowout preventer comprises a spherical chamber hollow-out inside and a part connecting with the tracheostmy catheter and arranged at the lower end of the spherical chamber; a vent hole is arranged in the upper end of the spherical chamber, and two notches are arranged in the edge of the vent hole. The collection type blowout preventer is simple in operation and capable of collecting and storing sputum, preventing the sputum splashing, being used in the situation no matter the tracheostomy catheter is available or not, and the effect that no leakage is caused when the patient lies flat and lies on his/her side is achieved.