The invention discloses an efficient, safe and environment-friendly chemical heating combustion furnace. The furnace comprises an oil inlet pipe, a regulating valve, heating pipes, a shell, a thermometer, a timer, a preheating pipe, a pressurizing device, an oil conveying pipe, a combustion cavity, an oil spraying head, filter holes and a gas pressure meter, wherein the combustion cavity is formedin the shell; the multiple heating pipes are arranged in a gap between the shell and the combustion chamber; the thermometer and the timer are arranged on the shell; the adjusting valve is arranged on the oil inlet pipe; the oil inlet pipe communicates with the preheating pipe; the other end of the preheating pipe is connected with the oil conveying pipe; the preheating pipe is arranged in the gap between the shell and the combustion chamber; the preheating pipe is arranged on the outer side of the heating pipes; the pressurizing device is arranged on the oil conveying pipe; the oil sprayinghead is arranged at the outlet end of the oil conveying pipe; the oil spraying head is arranged in the combustion cavity; and the filter holes are formed in the oil spraying head. According to the efficient, safe and environment-friendly chemical heating combustion furnace, preheating is carried out on the fuel in the preheating pipe, thus the situation that conbustion of the fuel is more easily and fully is guaranteed, and the working efficiency is improved; and meanwhile, heat is prevented from being diffused into the air, thus the fuel is prevented from being wasted, and the working efficiency is improved.