The aim of the present study has been already comparing the effect of social skills training (apologizing; annoyance and oppression avoiding) on self-assertion and psycho health in retarded students. The method of this experimental research is to design a pretest and posttest doing with an experimental group and a control one. The statistical population consists of the students studying in atypical schools in east part of GILAN province that they were 140 students studying in two different cities that of course just one of the cities selected, then the students was given 70 questionnaires titling as SHRING self-assertion and GOLDBERGE mental health. Then 60 students were screened who had got the lowest marks and finally 45 people were grouped in 3 classes each holding 15. Two of them received the trainings in apologizing and annoyance and oppression avoiding in 6 sessions each lasted for 45 minutes in workshop procedures then all the three groups were tested. The collected data were analyzed to test the research hypothesis using covariance analysis- statistical test. The results showed that: some social training in apologizing was effective on self-assertion and mental health and it was different from disliking annoyance and oppression.