Abstract: Based on tracing the development history of coalbed methane (CBM)stimulation and reforming technology at China and abroad, this paper finally analyzes the outstanding progress and main techniques made by the CBM industry based on four aspects:fracturing fluid system, completion technology, supporting tools of fracturing and gas well management method. According to China's development situation of CBM stimulation technology, this paper proposes six scientific issues that need to be tackled urgently, including the nonlinear dynamic propagation mechanism of fractures, the theory of geostress field inversion and redirection, the rheological control of fracturing fluid, the noise discrimination of microseismic data, and etc., and looks forward to the development trend of China's CBM stimulation technology. The further development trend includes multi-well linkage industrial drilling and completion mode, diversified fracturing fluid system with active water as the main body, multi-lithology synergistic and multi-layer commingled fracturing operation mode, repetitive fracturing technology combing temporary plugging technology, advanced and efficient supporting equipment of drilling and completion, as well as intelligent data management and remote decision-making system, which is helpful to overcome the technical barrier in the large-scale development of CBM and promote the intelligentized, integrated, matching, economical and sustainable development of the industry.