The invention discloses a manufacturing method of a bamboo chair. The manufacturing method comprises the following steps of (A) selecting and cutting materials: selecting phyllostachys pubescens whichgrows for more than four years, cutting into to-be-assembled parts according to the specification and size of each part required by assembling the bamboo chair, and scraping the green husk, wherein the to-be-assembled parts include longitudinal bamboo pipes, transverse bamboo pipes, vertical rods, bamboo pressing pipes, bamboo bolts, back rods, bamboo pipe backing blocks, bamboo pipe handrails, support rods, reinforcing rods and bamboo sheets; (B) separating colors, disinfecting and carbonizing: sending a finished product of the bamboo chair into a drying and disinfecting carbon dryer, specifically, the heating temperature of the drying and disinfecting carbon dryer is 160 to 190 DEG C, the heating time is 2 to 4 hours, the bamboo chair is carbonized till the carbonizing degree is 5% to 30%, and then taking out; and (C) assembling the bamboo chair.