Beamstrahlung is the phenomenon of synchrotron radiation emitted by particles in one charged particle beam as they are deflected by the collective electromagnetic fields of an opposing beam during a beam-beam collision. As a fundamental concept in accelerator physics, it investigates the intricate electromagnetic interaction between colliding beams, characterized by energy loss and angular deflection of particles; its significance lies in being a primary limiting factor for luminosity and energy resolution in high-energy linear colliders, necessitating comprehensive theoretical modeling and experimental study for accelerator design and optimization.