The article analyzes the gas production and construction parameters of the vertical wells in the representative layer of the 15# and 3# layers in the target area due to insufficient construction strength and low gas production in the test well. The influence of the fracturing construction of the test well on its productivity was studied. The fracturing effect prediction model was established by combining the influencing factors such as construction strength, fracturing fluid, sanding strength and sand ratio. The model is used to carry out optimization research on fracturing construction parameters. Based on the analysis of influencing factors, the optimization parameters of construction parameters are proposed. The optimization scheme can obtain better test results through later engineering verification. The results show that the stable gas production of the coalbed methane well in the target block can reach an average of more than 1000m3/d through the optimization of the fracturing construction parameter system.