The invention discloses an ion pollution detection device which comprises a main frame of a measuring device and a cleaning trough, a circulating main pipeline, a pump, an electric conductivity meter,an ion exchange column and all levels of valves which are arranged in the main frame, a detection electrode of the electric conductivity meter is arranged in the main pipeline, the pump and various electromagnetic valves are connected with a control circuit for control. The ion pollution detection device can not only carry out the high-speed and high-precision ion pollution degree detection of acircuit board, but also can conveniently realize the regeneration of extract liquid in the cleaning trough; furthermore, the needed extract liquid is less, and the main frame adopts aluminum profilesfor splicing, thereby facilitating the installation; a marble is adopted to be used as a panel, thereby allowing the service life of the panel to be longer and allowing the cleaning to be more convenient.