Introduction: Endotrachial suction is a metod to remove secretions from the airway in patients who can not perform this voluntarily and have an artificial airway. Suctioning is frequently used in the ICU and can result in many complications if not performed properly.The aim of this study was to evaluate nurses performans on standardized endotracheal tracheostomy tube suctioning in intensive care unit.Materials and methods: In this profile Descriptive study the performance of 136 nurses occupied in ICU section on tracheostomy and endotracheal suction was considered.the finding data were acquired through using a checklist containing 25 items. They were analysed by central index, t. test, k2 test and spss 21.Results: The result showed that the performance of 19.2 percent of subjects were weak, 65.4 percent moderate and 15.4 percent were good. On the other hand none of the subjects showed excellent or bad performance. More over the noticeable statistical differences did not observe between the average of subjects, performance in tracheostomy and endotracheal suction. (p>0.05). Also while some factors as age, education and having experience in occupied business had direct offection on subjects, performance (p<0.05), other factors as age, gender had no effect (p>0.05).Conclusions: Although based on the finding data the subjects, performance on tracheostomy and endo tracheal suction was rather desirable. It seems that doing more researches in this case in necessary because in this research some factors related to the standards of tracheostomy and endotracheal suction were ignored.