The invention relates to a bioflocculant 
fermentation method, in particular to a bioflocculant 
fermentation method with a 
mycelium pellet as a vector. The method solves the problems of 
high energy consumption, high production cost and unsuitability for large-scale industrialized 
fermentation production and the like existing in the existing bioflocculant fermentation method and comprises the following steps of: 1, mixing 
rhizobium radiobacter with 
bacillus sphaericus and then culturing so as to obtain flocculant-producing 
bacteria seed liquid; 2, culturing 
aspergillus niger to be a mature 
mycelium pellet; 3, mixing the mature 
mycelium pellet with the flocculant-producing 
bacteria seed liquid and then culturing so as to obtain a mixed mycelium pellet; 4, taking 24-hour as a fermentation period, and drawing out the mixed mycelium pellet after each fermentation period is finished and pouring the mixed mycelium pellet into fresh 
culture mediums for culturing; and 5, repetitively operating the step 4 for 30-35 times and namely completing. According to the bioflocculant fermentation method provided by the invention, on the premise of guaranteeing stable flocculating rate, seed liquid demand is reduced, production efficiency is increased and production 
energy consumption is reduced; moreover, the invention has great significance on large-scale industrialized production of bioflocculant.