In the process of scanning and jump selection of laser generator, the rationality of the hopping sequence of laser scanning was not considered. In order to solve this problem, a laser generator based on probability model was designed. The causes of the jump power consumption in the scanning process of laser generator was analyzed. A scanning jump selection model based on probability was designed. The probability analysis of the jump threshold and sequence in laser scanning detection was carried out by using probability statistics method. The detection vector and the laser scanning unit arrangement method were used to re-sort the scanning sequence, so as to reduce the unnecessary jump power of laser generator. A low energy saving design was achieved. Experimental results show that the proposed method can reduce the scanning jump of the laser generator and realize the energy saving control. It has high control efficiency and accuracy.