The present invention relates to a system for managing water leak and failure statuses of solar thermal equipment and, particularly, to a solar thermal equipment management system comprising: a fluid concentration sensor which is disposed in a collector circulation pipe of the solar thermal equipment so as to generate measurement voltage and resistance values used to determine whether a heat medium leaks and whether the concentration thereof changes; a control module for determining whether the heat medium leaks and whether the concentration thereof changes by using the measurement voltage and resistance values generated by the fluid concentration sensor; and a display unit for receiving, from the control module, the result of the determination as to whether the heat medium leaks and whether the concentration thereof changes, and displaying the same. The present invention can accurately diagnose and predict major failures in solar thermal equipment at an early stage, thereby extending the lifetime of the solar thermal equipment and improving the performance thereof.