The invention discloses a manufacturing process of a high-quality bamboo biomass machining rod. The manufacturing process comprises the steps as follows: a, air-seasoning and fermenting fresh bamboos for 30-40 days; b, conducting primary grinding, roller heating and drying and regrinding to fermented bamboos in sequence; c, quickly conducting extrusion molding to reground powder materials by an extruder at the high temperature of 450-500 degrees centigrade; d, processing molded bamboo biomass into the rod. Compared with a prior art, in the manufacturing process, pure bamboo biomass as the raw material is used for processing the residual bamboo biomass machining rod, air-seasoning and fermenting are adopted, heat extrusion molding is conducted according to melting temperature of original ingredients of the bamboo; no binders are added, the bamboo grain size is controlled for quick extrusion molding at the high temperature totally according to the material property; the machining rod extruded is high in molding rate, not easy to break off, uniform in shape and steady in dimension. The carbon rod fired has hard texture and high burning value without fume, odor and toxicity during burning and use.