The invention discloses a haze particle formation simulator which comprises a combustion furnace, a control console, a growth simulation chamber, a light shield, a sucking pump, a flow meter, a three-way valve with a stop valve, a haze particle collector and an air purifier, wherein the growth simulation chamber is fixed on the control console; the combustion furnace, the growth simulation chamberand the air purifier are connected into a system by the sucking pump; the three-way valve with the stop valve realizes independent operation of a smoke dust source supply channel and a haze particlecollection channel; multiple feeding holes and an exhaust valve are formed in the growth simulation chamber, and the growth simulation chamber is equipped with temperature, humidity, airspeed and light intensity detection sensors as well as a light source, a fan and a supercharging balloon; and a temperature control device, a humidifier and a pressure gage are arranged in the control console. By detecting and regulating the temperature, pressure, humidity, airspeed and light intensity in the growth simulation chamber, the outdoor environment formed by haze is simulated, a research is conductedon formation of single haze particles or a multi-haze particle mixing system, and the haze particle formation simulator has obvious value on treatment of the atmospheric environment.