The utility model discloses a sputum bottle, relates to the field of medical articles, and provides a sputum bottle capable of conveniently collecting and sealing sputum. The sputum bottle comprises abottle body, a middle cover and an upper cover which are sequentially arranged and detachably connected. A bottle body one-way valve through which gas can pass from inside to outside is arranged at the upper part of the bottle body; a funnel is arranged on the middle cover, a concave flexible head is arranged at the bottom of the funnel, and a notch is formed in the bottom of the flexible head; the upper cover is provided with an upper cover one-way valve capable of allowing gas to pass through from outside to inside, and the top of the upper cover is provided with an elastic cover protrudingupwards. During spitting, the upper cover is opened, and sputum is spitted into the funnel; and then the upper cover is covered, the elastic cover is repeatedly pressed, sputum enters the flexible head under the action of self gravity and air pressure, and the incision is opened under the action of air pressure to leak into the bottle body. When the upper cover is opened for next spitting, sputumis blocked by the funnel and the flexible head, so that the patient cannot see the sputum, the mood of the patient is prevented from being influenced, and the sputum is sealed to a certain extent.