The invention discloses a fire early-warning method of a fixed-point area unit. The fire early-warning method comprises the steps of analyzing historical ignition data and comprehensively consideringpotential fire hazards and fire risk resistance, and determining a fire risk factor; determining a risk factor index; establishing a fire risk level model; determining a fire risk index of the fixed-point area unit; and determining and pre-warning the fire risk level of the fixed-point area unit. The fire risk level of the fixed-point area unit is determined according to the established fire risklevel model, and fire risk early warning is carried out. All the fire hazards are summarized into three categories including fire control inspection, fire control acceptance and remote monitoring, andthe three factors are added into the fire early warning model. The method is reasonable in design, and the actual application and accuracy of the fire early warning are effectively improved.