The invention relates to the technical field of paper-making pulping, and particularly discloses a bamboo pulp displacement cooking method. The method comprises the following steps: conveying an original bamboo into a slicing machine for slicing, performing screening, debris separation, washing, grinding and depithing, and then performing dewatering treatment; conveying the treated bamboo material into a soaking box for soaking; continuously and uniformly conveying the output bamboo material together with cooking liquid into a continuous cooker with two stages of blowing-out transverse pipes, heating the continuous cooker step by step, when the temperature in the cooker is higher than or equal to 100 DEG C, stopping heating, and opening the blowing-out transverse pipes to blow out steam generated by the cooker into the soaking box; continuously inputting the treated cooking liquid in the soaking box into the cooker, and heating the cooker again to 150 DEG C; shutting off a heater to enable slurry to be circulated in the cooker; introducing the slurry into a heat exchanger for heat exchange with the normal-temperature cooking liquid; when the temperature in the heat exchanger is less than or equal to 60 DEG C, pumping out the slurry through a pump, and performing secondary blowing out to enable the slurry to enter a blowing-out pot. The method disclosed by the invention conforms to the characteristics of a bamboo raw material, and the utilization rate of bamboo pulp is increased.