As a core device for ensuring the safety of optical cable connections in optical fiber communication networks, optical fiber joint boxes play an irreplaceable role as "guardians" in the optical signal transmission chain. They not only need to ensure the physical safety of optical fiber joints but also guarantee the stable transmission of optical signals in complex environments. Their parameter characteristics cover multiple dimensions from basic capacity to complex environmental adaptability, with each parameter directly affecting the applicable scenarios and operational performance of the device. The following provides a comprehensive and in-depth analysis of their parameter characteristics from multiple key perspectives.