Due to the inherent advantages, including the ability of both voltage step-up and step-down, positive output voltage, and reduced number of passive components and voltage stress of the power devices, the four-switch Buck-Boost (FSBB) converter has been attracting people's attention. However, it encounters challenges in mode transfer within the multi-mode control strategy. Given the discrete operation and finite transfer state nature of power electronic converters, this paper employs model predictive control (MPC) to address mode transfer difficulty while offering numerous system-level benefits. Compared with the average inductor current control, the effectiveness of the control strategy is verified in the simulation test. Furthermore, this paper introduces self-developed software, PECtrlStudio, which greatly streamlines the intricate development and debugging processes via graphical programming.