The invention discloses a novel saturated and unsaturated permeation triaxial apparatus. The novel saturated and unsaturated permeation triaxial apparatus comprises a pressure chamber, wherein the upper end and the lower end of the pressure chamber are respectively provided with a pressure chamber top plate and a pressure chamber bottom plate; a top cap is arranged in the pressure chamber; the top cap is provided with a loading rod; the pressure chamber bottom plate is provided with a base; a control device is arranged on the pressure chamber; the control device comprises an axial force sensor, a displacement sensor, a differential pressure sensor, a first pore water pressure sensor, a second pore water pressure sensor, a first volume/pressure controller, a second volume/pressure controller, a third volume/pressure controller, a pressure controller and a data collector; and the pressure chamber is divided into an inner pressure chamber and an outer pressure chamber. The novel saturated and unsaturated permeation triaxial apparatus provided by the invention is high in precision, and realizes saturated-unsaturated continuity in a triaxial test.