In the process of point target detection, the blind pixel can easily lead to wrong detection of point target. Aiming at the defect that the conventional blind pixel detection method cannot detect the random blind pixel dynamically, a blind pixel dynamic detection method for IRFPA towards point target was proposed. In this method, the suspicious point targets which are removed by the multi-frame detection of point targets are chosen as potential blind pixels. Blind pixel feature model is used to match potential blind pixels, and the likelihood function of the confirmed blind pixel is characterized by multi-frame accumulation. In the subsequent detection, the blind pixels are dynamically detected by using the blind pixel likelihood function which is iteratively updated by the detection result, so as to adaptively detect blind pixel. The results showed that this method can dynamically eliminate random blind pixel and fixed blind pixel without interrupting the detection process of the point target, and at the same time improve the detection accuracy of the point target with a small amount of computation and is easy to be implemented by hardware.