Abstract : The objectives of this study were to examine the helpfulness on assessment of guidance and counselling services in helping undergraduate and post graduate students with psychiatric problems and found out the actual factors causing psychiatric problems among undergraduate and post graduate students who were studying at Rajamangala University of Technology Thanyaburi. The researcher used quantitative and qualitative methods to investigate the assessment of guidance and counselling services in helping undergraduate and post graduate students with psychiatric problems at Rajamangala University of Technology Thanyaburi. The respondents who participate in this study were 139 Undergraduate and post graduate students, they agreed that the assessment of guidance and counselling services were helpful to them in coping with psychiatric problems at Rajamangala University of Technology Thanyaburi. As a result of the reliability coefficients (Cronbach Alpha) the helpfulness on assessment of guidance and counselling services by undergraduate and post graduate students) n = 139, the Crobach Alpha ranged from 0.88 to 0.95. Semi-structured interviews were used to gather data from three undergraduate students and three post graduate students who faced psychiatric problems.