In order to study the effect of leachate recirculation on the pore-water pressure migration in a landfill, a theoretical equation of the pore-water pressure was built under the premise of ignoring the leachate migration in the vertical direction and with consideration of the actual working conditions of leachate recirculation in the landfill, the liquid phase constitutive equation, the water balance condition, and biochemical degradation of organic compounds. The equation was solved under different boundary conditions, and analytical solutions were obtained under two conditions of group-well recirculation and single-well recirculation. The results showed the following: (a)In single-well recirculation, the pore-water pressure was stable after 30 days of recirculation, the pore-water pressure quickly decreased with the distance from the well, and the recirculation effect was greater within 15 m of the well and lesser beyond 20 m of the well. (b)In group-well recirculation, the pore-water pressure increased rapidly at the beginning of recirculation, then, the pore-water pressure in the landfill cells finally reached the recirculation head pressure, and the group-well recirculation had a stronger effect than the single-well recirculation. (c)High pore-water pressure is generated during leachate recirculation in the garbage, so, in practical engineering, the pore-water pressure should be considered when determining the recirculation time and distance.