The present invention relates to a chemical spray and temperature/humidity control apparatus of an agricultural and stockbreeding greenhouse, which comprises: a discharge pipe unit spraying a fluid supplied through a spray supply pipe through a nozzle a water storage tank where a chemical fluid or water is stored a first air supply pipe mounted to allow air generated in an air feeder to be supplied into the water storage tank so as to use the air to agitate the chemical fluid a second air supply pipe arranged to allow air generated in the air feeder to be supplied to the spray supply pipe a ventilating fan to diffuse the fluid sprayed through the nozzle and ventilate the greenhouse a pump to supply the fluid stored in the water storage tank through the spray supply pipe by pumping an operation unit arranged to determine the conditions of chemical fluid spray and temperature and humidity control in the greenhouse a temperature sensor and a humidity sensor respectively detecting the temperature and the humidity in the greenhouse first and second electromagnetic valves respectively mounted on the first and second air supply pipes, and opening and closing flow passages and a control unit receiving temperature data outputted from the temperature sensor, and controlling the actuation of the ventilating fan, pump, air feeder and first and second electromagnetic valves according to the setting condition of the operation unit. According to the chemical spray and temperature/humidity control apparatus of an agricultural and stockbreeding greenhouse, air generated in an air generator can be used during a chemical fluid mixing process and a nozzle cleaning process. Furthermore, the temperature and humidity in the greenhouse are controlled due to spraying action and operation of the ventilating fan so the detention time and diffusion efficiency of sprayed particles can be increased.COPYRIGHT KIPO 2016본 발명은 농축산 시설 하우스의 약제살포 및 온습도 제어장치에 관한 것으로서, 분사 공급관을 통해 공급된 유체를 노즐을 통해 분사하는 토출관부