Bamboo charcoal is made from rich old bamboo by high-temperature pyrolysis technology, which lasted more than 20 days. It has strong adsorption and decomposition ability, moisture absorption and dryness, deodorization and antibacterial, negative ion penetration, and integrates technology, comfort, breathability and health care. The bamboo charcoal insole has the functions of inhibiting fungal reproduction, absorbing moisture, deodorizing, relieving itching, reducing swelling and preventing hunger, and integrates health care, refreshing and health care.