Preparation method of mildew-proof bamboo unit/bamboo product

The invention provides a preparation method of a mildew-proof bamboo unit/bamboo product, the method comprises the following steps: primarily drying bamboo, performing high-temperature heat treatment in a carbonization kiln, continuously spraying atomized water to keep micro-positive pressure in the kiln body, and collecting heat treatment wastewater; precipitating reducing sugar in the bamboo wood heat treatment wastewater to obtain wastewater a; carrying out oxidation treatment on the wastewater a by using an oxidizing agent or UV ultraviolet radiation to obtain a mildew-proof impregnation liquid; and finally, placing the bamboo units in mildew-proof steeping liquor to be steeped, or directly brushing the mildew-proof steeping liquor to the surfaces of the bamboo products, and obtaining the mildew-proof bamboo units/bamboo product. According to the method, the bamboo high-temperature heat treatment wastewater is used for bamboo mildew-proof treatment for the first time, the color and antibacterial activity