Purpose: As the most stable social unit, the family is a 
fundamental axis for the healthy functioning of individuals 
and society. The purpose of this research was to explain the 
family functioning model based on communication skills with 
the mediation of psychological security among couples.
Materials and Methods: In terms of the purpose, the present 
research is considered to be of the applied type, and in terms 
of the data collection method, it is classified in the descriptivesurvey research group. The statistical population includes all 
married men and women in areas 1 and 3 of Tehran in 1400-
1999. Non-random sampling method has also been available. 
Data collection tools were demographic information 
questionnaire, psychological security questionnaire (short 
form), family functioning assessment questionnaire (FAD) 
and communication skills questionnaire. Data analysis was 
done using AMOS program in addition to descriptive statistics 
methods.
Findings: The results showed that there is a significant 
relationship between the components of communication skills 
and family functioning, there is a significant relationship 
between communication skills and psychological security, 
there is a significant relationship between psychological 
security and family functioning, psychological security It has 
a mediating role in the relationship between communication 
skills and family functioning.
Conclusion: Therefore, the communication skills and intimate 
relationships between couples can affect their psychological 
security, because each of the couples, by establishing romantic 
and intimate relationships and the context of having 
psychological security through the couple and the other, can, 
in turn, lead to family stability