The authors studied bamboo vinegar preservative performance and mold prevention on selected wood molds.The goal was to improve performance and develop the most efficient preservative with lowest toxicity for wood and bamboo.The results showed that bamboo vinegar was 99% effective at sterilizing bacterium fungi even when diluted to 10% strength.The antifungal action was greatly improved by adding active components.Treated bamboo products had improved antifungal performance and could meet Grade 4 requirements using only raw bamboo vinegar,Grade3 with PW1 coating,Grade 2 with PW2 dipping or PW3 dipping,Grade 1 with PW1 dipping and PW2 coating,and Grade 0 with PW3 coating.