The invention discloses an environment purification system and a control method of the environment purification system. The environment purification system comprises a monitoring device, a purifying device and a controller. The monitoring device is used for monitoring quality index parameters of environment gas of a purified area; the purifying device is used for removing dust and adsorbing at least one type of poisonous gas in the gas; the controller is used for being connected with the signal output end of the monitoring device and receiving the quality index parameters; the controller comprises a judgment module used for judging the quality index parameters and the corresponding standard values, and if the quality index parameters are higher than the standard values, the controller starts the purifying device to filter the gas so as to make the quality index parameters be lower than the standard values; the controller in the environment purification system can judge whether the quality index parameters monitored by the monitoring device exceed the standard or not, and if the quality index parameters exceed the standard, the purifying device is started to purify the environment gas of the area, the gas meeting the usage requirements is obtained, and people within the area are prevented from being threatened by the environmental pollution.