Abstract: Abstract: Coalbed methane（CBM） resources are very abundant in China, and the study of CBM reservoir physical properties is of great significance to the and development of low-rank coal coalbed methane. This study taked the Jurassic coal seam in the eastern margin of the Ordos Basin as the research object, and a variety of means such as large-sample methane adsorption-desorption experiments, nuclear magnetic resonance methane adsorption experiments, CBM well desorption gas test experiments and CBM well engineering gas production practice to analyze the influence of coal body structure on the characteristics of low-rank coal adsorption-desorption methane, methane storage morphology, gas content gas production characteristics and differences. The experimental results showed that the stronger the degree of damage to the coal body structure, the higher the adsorption amount of methane, greater the Langmuir volume; methane in low-rank coal mainly exists in three ways: adsorption state, adsorption-desorption conversion state, and free state; methane adsorption-desorption experiments of different coal bodies structure of low-rank coal are prone to desorption hysteresis phenomenon; the worse the coal body structure, the higher the initial desorption rate of methane, and the greater the gas content of the coal seam. The comprehensive studies showed that the lower the degree of damage to the coal body structure of low-rank coal, the higher the methane adsorption capacity, higher the proportion of methane that can be stably stored in the adsorption state and the adsorption-desorption dynamic conversion state, and the greater the gas content of methane; coal body structure is also the main factor affecting the gas production characteristics and curve shape of CBM wells. When the coal seam extracted by the coalbed methane well is dominated the original structure, When the original structure is dominant in the CBM well, the gas well starts to produce gas early, with a high initial gas production and a gas production curve with three steps growth and tends to be stable. When the fault structure and crushed structure are dominant in the coalbed methane well, the gas well starts to produce gas late, with a low initial production, and the gas production curve is double-step growth and tends to be stable. It is generally believed that the development of ground CBM in low-rank coal should not take the coal body structure as the main influencing factor for the selection of the development area and the evaluation of the gas production, and more attention should be paid to the gas and prevention work in the coal mine area where the coal body structure is in good condition. The research results can provide reference value for the re-ognition of CBM reservoir in the eastern margin of the Ordos Basin and the optimization of the ground development engineering, and the mine gas control.