Using waste bamboo as raw materials, a semi-liquefied bamboo powder was prepared for the bonding of bamboo and wood boards under the action of a liquefaction aid formed by chromium-containing leather shavings (LS), hydrochloric acid and a small amount of phenol. Single factor experiment was used to investigate the influence of liquefaction time, liquefaction temperature, the dosage of LS and liquid-solid ratio on the effect of liquefaction. The difference of bamboo powder before and after semi-liquefaction was analyzed by FTIR, SEM and DSC. Under the conditions of 12% LS addition, a liquid-solid ratio of 5:1, and a microwave heating temperature of 150 ℃ for 15 min, the liquefaction rate of bamboo powder can reach 60.95%. The liquefaction rate proves that LS has a catalytic liquefaction effect on bamboo powder, and the prepared liquefied product can be used as a binder to prepare plywood to meet the category II plywood index in GB/T 9846-2015 "Ordinary Plywood". Therefore, it provides reference for the recycling utilization of two kinds of waste resources.is heated to the reaction temperature of 150 ℃ for 15 min. The liquefaction rate of bamboo powder reaches 60.95 %. It is proved that the chromium-containing leather shavings can catalyze the liquefaction of bamboo powders, and the liquefied product can meet the requirements of plywood adhesive, which provides a reference for the recycling utilization of two kinds of waste resources.