The invention belongs to the technical field of geotechnical engineering related researches and discloses a predicting method of a saturated soft soil self-weight consolidation process. The method includes the steps of firstly, setting the parameters and boundary conditions of the soil model of saturated soft soil, wherein the parameters include soil constitutive relation data points; secondly, dividing the soil model into units of a preset number, and calculating the initial and final void ratio of each unit; thirdly, sequentially calculating the effective stress, permeability coefficient and seepage velocity of the units; fourthly, calculating time increment, and superimposing the time increment with current consolidation time to obtain new total consolidation time; fifthly, acquiring a settling volume according to the seepage velocity and the time increment; sixthly, judging a termination condition is met or not, if so, outputting the self-weight consolidation parameters of the saturated soft soil, and if not, turning to the third step. The predicting method has the advantages that factors such as geometrical nonlinearity, material parameter nonlinearity and the like, calculation errors are reduced effectively, and calculation precision is increased.