The invention relates to a mining technical field for deformed coal coalbed methane, and in particular relates to a mining method for deformed coal coalbed methane for V-shaped well bottom plate auxiliary layer. The method comprises the following steps: 1, deploying well position; 2, drilling a vertical shaft; 3, drilling a horizontal well; 4, fixing well via horizontal section; 5, staged fracturing; 6, secondary abutting joint; 7, producing in a pump. The mining method for deformed coal coalbed methane for V-shaped well bottom plate auxiliary layer is good in fracturing effect, and big in single well control storage amount, the coalbed methane seepage passage from the coal bed to the auxiliary layer can be established, no pollution is generated, the water in the coal bed can be completely discharged, and the deformed coal coalbed methane yield is greatly improved. The mining method for deformed coal coalbed methane for V-shaped well bottom plate auxiliary layer overcomes the defects of the existing deformed coal coalbed methane mining method that the fracturing effect is poor, the pollution is easily generated, the water in the coal bed cannot be discharged completely and the deformed coal coalbed methane yield is low.