One of the primary objectives of the LISA mission is to measure and characterize the stochastic gravitational-wave background (SGWB). Achieving this goal will allow LISA to explore various domains, including astrophysics, cosmology, and particle physics. This talk will focus on the latter, specifically on physics beyond the Standard Model that involves strong first-order phase transitions. We will demonstrate that LISA holds significant potential for advancing particle physics. Indeed, by utilizing the reconstruction of the SGWB from first-order phase transitions, LISA will accurately constrain the parameter space of particle physics models.