The invention discloses a kitchen air 
pressure balance system. The kitchen air 
pressure balance system comprises an extractor hood and an air 
pressure balance device. The air sucking end of the extractor hood is close to a gas stove. The air exhausting end of the extractor hood communicates with the outdoor 
atmosphere. The air pressure balance device comprises an air guiding 
pipe and an 
air door. The air guiding 
pipe is arranged on a wall or the top of a window of a kitchen, penetrates through the wall or the window of the kitchen and is away from the extractor hood. An 
airflow channel which communicates with an indoor space of the kitchen and the outdoor 
atmosphere is limited in the air guiding 
pipe. The end, located in the outdoor, of the air guiding pipe forms an air inlet. The end, located in the indoor space of the kitchen, of the air guiding pipe forms an air outlet. The end, forming the air inlet, of the air guiding pipe is bent downward. The 
air door can be in pivot connection with the end, forming the air outlet, of the air guiding pipe. According to the kitchen air pressure balance 
system, the fact that naked 
flame of the gas stove is blown out by 
airflow can be prevented, the fact that cooking fume is blown away by the 
airflow is also prevented, the efficiency of the extractor is improved advantageously, and the fact that sundries such as rainwater enter the airflow channel through the air inlet can be prevented.