It is traditionally assumed that the Coal Bed Gas (CBG) formation is the effect of thermolysis (cracking) of the bulk coal organic matter by stratum temperature/pressure or animalcule. However, some researchers have debated the validity of that view. The advances in research on CBG catalytic generation are selectively summarized in three aspects: The minerals/metal elements as the gas generation catalyzer;  the catalytic simulated experiment and its results token;  the catalysis mechanism. Then the research emphases and development direction are discussed. The reaction under geological condition is more complicated than the lab condition. Therefore, during the gas generating simulation process, we should not just study the effect of some natural minerals but also consider the reaction between organic and inorganic and the effect during the different inorganic minerals in the idiographic geological condition, and try best to make the condition close to the actual stratum condition. It is advised that based on geology and chemistry, the results of chemical industry be used to investigate the microcosmic state-state and bond-selective catalysis between organic and inorganic matters. Importance should be attached to the integration of coal petrology, mineralogy in coal, coal organic and inorganic geochemistry, catalytic chemistry to explore the catalysis essential of mineral/metal elements, and to search the catalytic symbol aiming at the idiographic object to set up quantificational catalytic reaction speed and gas productivity math model.