Vibration energy harvesting is a new and widely used technology. Harvested energy can be used in small automated systems like wireless sensors and rechargeable batteries. In studies on the vibration energy harvesters, it has been shown that energy harvesters with nonlinear behavior have better performance than the linear counterpart over a wider frequency bandwidth. Bistable laminates are considered as a nonlinear system for vibration energy harvesting. These laminates have two stable states and there is no need to spend energy on maintaining the system in each state. Also, when these laminates change their shape from one stable state to another stable state, large deformations occur in them that makes them a good choice for energy harvesting. In this study, the energy harvesting of bistable laminate with piezoelectric layers is investigated. Also, for the first time, the effect of adding magnetic forces to the system will be investigated. It is expected that the magnetic force will improve the performance of the energy harvester system by reducing the base excitation for snap-through. In this regard, firstly, static analysis will be done by minimizing potential energy with the Rayleigh-Ritz method and the written code in MATLAB software. ABAQUS commercial software has been used to develop a finite element model. The results show that adding magnet force reduces out-of-plane displacement and quasi-static snap-through force. Then the dynamical equations are extracted by using Hamilton’s principle. Dynamic analyzes will be studied by developing a semi-analytical model, finite element simulations, and carrying out experimental tests. Also, the effect of adding concentrated mass and magnet force will be examined separately. According to the results, adding magnets reduces base excitation that is needed for snap-through between stable states. This will improve the performance of the system without a magnetic force. After the confirmation of the semi-analytical model in dynamic studies, energy harvesting from a bistable plate with piezoelectric layers under magnetic force is studied by obtaining the governing electromechanical equations of the system with semi-analytical method. in the end, the effect of adding magnet force on improving energy harvesting from the vibration of the bistable composite plate will be investigated. The magnetic force causes the system to reach continuous snap-through with less excitation. So the performance of the energy harvester improves significantly. Keywords : Vibration energy harvesting, Nonlinear harvester, Bistable composite plate, Piezoelectric layers, Magnet force