The invention discloses a safety helmet with air-conditioning refrigeration and cooling functions. The safety helmet comprises a helmet peak and a helmet shell, and further comprises an air-conditioning refrigeration system, an atomization cooling system, a storage battery and a control switch, wherein the air-conditioning refrigeration system is fixedly mounted on the helmet shell; the atomization cooling system is connected with the atomization cooling system through a flow guide pipe, fixedly arranged on the helmet shell, and positioned at a front position of the air-conditioning refrigeration system; the storage battery is positioned on the left side of the helmet shell; the control switch is positioned on the right side of the helmet shell, and connected with the air-conditioning refrigeration system, the atomization cooling system and the storage battery; the atomization cooling system comprises a water storage case, a micro electromagnetic valve, a micro DC water pump, a micro fine atomization nozzle and a micro anion generator; the micro electromagnetic valve is arranged at a water outlet in the water storage case, and connected with a water inlet in the micro DC water pump through a water inlet pipe; the water outlet in the micro DC water pump is connected with the micro fine atomization nozzle; the micro anion generator is arranged on one side of the micro fine atomization nozzle.