Condensate stabilization tower and bottom reboiler are important equipments of petrochemical condensate oil stabilization unit. Yazhan condensate stabilization tower has been in operation for 14 years without tower opening inspection.After core pulling inspection of bottom reboiler in February 2019, serious salt deposits were found on the outer wall of tube bundle and mud sand was found in the shell of reboiler.After replacing the reboiler tube bundles, the bottom of the tower is heated up to 120℃.At present, the bottom temperature of the tower runs at 105℃.When the bottom temperature of the tower is above 110℃, the drainage frequency of the top reflux tank is obviously accelerated,and the top temperature and the bottom hot oil valve fluctuate.When the bottom temperature is serious, full reflux is adopted to improve the separation effect.According to the salt washing operation of the condensate stabilization unit in the early stage of Yazhan Station, the salt blockage on the outer wall of the reboiler tube bundle of the condensate stabilization tower and the mud and sand blockage on the shell side, the salt blockage and sand blockage on the second exchange tube bundle, different degrees of salt blockage and sand blockage can be judged to exist on the tray of the condensation tower.This paper analyses the physical properties of crude oil, hot water salt dissolution test, demulsifier addition and salt washing scheme optimization, and finds out the reasons for the worsening effect of temperature rising at the bottom of the condensation tower and puts forward corresponding countermeasures.