Abstract: The technology of liquefying processed-waste bamboo with phenol is researched by single factor trial and orthogonal trials; and the preparation technology and properties of the adhesive from this phenol-liquefied bamboo with formaldehyde(BPF) are studied. The results testify that temperature is significant on liquefaction, mass ratio of phenol to bamboo is in the next place, catalyst dosage within the range of 2%-4% is less effective. The optimum conditions of liquefaction are as follows: mass ratio of phenol to bamboo 3.5, catalyst dosage 4%, liquefying temperature 145℃, and liquefying time 60 min. Liquifaction rate of bamboo arrived 99.1%. For the preparation of the adhesive, mass ratio of liquefied bamboo products to formaldehyde(37%) is 100 to 164.8-199.5,while the ratio 100 to 108.2 is the best. This adhesive has a lower curing temperature than that of normal PF resin. At the hot-press temperature of 130℃ or 140℃, this new adhesive can provide excellent bond strength of the plywood, and the favorable temperature is 140℃.