Most of recent researchers found that Facebook use is related to studentsâ€™ emotional states of rndepression, anxiety and stress. The objective of study was to investigate the relationship of using rnFacebook on studentsâ€™ emotional states of depression, anxiety, and stress. A research design of rndescriptive correlational was used to investigate this research. And also linear regression and rnmultivariate tests used to analysis the data. Cross-sectional research was selected from time rnperspective. The population of this study was 360 students who attend their education in 2020 rnacademic calendar at the 3/three/ (General Wingate, Tegibard, and Entoto) Polytechnic colleges rnof Addis Ababa. The instrument of this study was standardized instruments i.e. Facebook rnIntensity Scale, and Depression, Anxiety and Stress (DASS-42/ scales. The data was collected in rnDecember first 2020. Correlation coefficients indicated that Facebook use and emotional states rnof depression(r=0.155, P=0.03), anxiety(r=0.138, P=0.009) and stress (r=0.110, P= 0.038) hadrna significant relationship. Time spent on Facebook correlated significantly with depressionrn(r=0.162, P =0.002) and Anxiety (r =0.145, P=0.006). Number of Facebook friends and rnemotional states of depression, anxiety and stress did not have any significant relationship. The rnthree emotional states/ depression, anxiety and stress/ had a significant relationship. Linear rnregression coefficients (Beta) showed that there was a significant relationship between Facebook rnintensity, and emotional states of depression, anxiety and stress. Moreover, the result showedrnthat there is significant evidence that relationship exists between Facebook intensity, andrndepression, anxiety and stress. There was no gender difference statistically found on time spent rnon Facebook and prevalence of depression, anxiety and stress. From the data collected andrnanalyzed conclusions have been drawn.