The invention discloses a three-dimensional multi-layer frame-type numerical-control fermentation method for Pu-erh tea. The three-dimensional multi-layer frame-type numerical-control fermentation method for Pu-erh tea comprises the following steps: (1) carrying out moistening by water; (2) carrying out material-feeding; (3) carrying out a first fermentation; (4) supplementing water before a second fermentation; (5) carrying out the second fermentation; (6) supplementing water before a third fermentation; (7) carrying out the third fermentation; (8) breaking the fermented Pu-erh tea into blocks; and (9) carrying out a fourth fermentation. The fermentation method ensures continuity and fermentation qualities of tea leaf fermentation and shortens fermentation time, so that the fermentation method prevents moisture in the pile from rapidly volatilizing so as to ensure a wet and hot environment for tea leaf fermentation. The Pu-erh tea prepared by the technology is basically free of pile flavor, and has characteristics of aged Pu-erh tea; the Pu-erh tea is red, heavy and bright in soup color, mellow in flavor and sweet in aftertaste; and the Pu-erh tea can be directly drunk and sold.