The invention provides a constant-pressure container bottle, relates to the field of daily necessities, and particularly provides a constant-pressure container bottle with exquisite structure, convenient use and long service life, which can effectively avoid air pressure difference inside and outside the container bottle after use, and can effectively avoid the accumulation and blockage of seasonings at the discharge port. The bottle comprises a bottle body with a top opening, and a constant pressure assembly. The bottom of the bottle body is provided with an air hole. The constant pressure assembly is arranged at the bottom of the bottle body. The constant pressure assembly comprises a housing, a constant pressure block and a spring, wherein the bottom of the housing is provided with an opening, the opening is opposed to an air hole, the constant pressure block is slidably connected in the housing, the spring abuts against the top of the constant pressure block and the inner wall of the housing, and at least one constant pressure hole is arranged on the side surface of the housing. The bottle solves the problem that the seasoning can not fall normally. On the whole, the bottle hasthe characteristics of exquisite structure, convenient use and good effect of constant pressure.