This research has been conducted to investigate the relationship between adult attachment dimensions and body image with sexual function. For this purpose, 300 married female BA students at Yazd University were chosen by volunteer sampling. The instruments of this study included the Collins attachment dimensions scale (1996), Marsh’s Physical Self-Description Questionnaire (PSDQ) (1996), and Rosen’s Female Sexual Function Index (2000). Regression analysis results implied that the adult attachment avoidance acts as a negative predictor of sexual function. Furthermore, from among the subscales of body image, appearance acts as positive predictor of arousal, lubrication, orgasm, and satisfaction; perseverance and power act as positive and negative predictors of arousal, respectively. In addition, well-being plays as positive and negative predictor of satisfaction and pain subscales, respectively. It can be deduced that the type of romantic relationship between the couples and the way they orient in the interaction with the spouse along with the person’s mentality about one’s physical appearance and their level of satisfaction can affect the quality of sexual relationship.