Abstract Introduction Sexual function plays a crucial role in women's psychosocial and overall well-being, significantly impacting their quality of life. Any decline in sexual function can have detrimental effects on the affected individuals' quality of life Objective (i) To describe the prevalence of sexual dysfunction in women seeking infertility treatment at the Andrology and Fertility Hospital of Hanoi, Viet Nam, and (ii) to analyze the factors associated with sexual dysfunction in the study population. Methods This was a cross-sectional descriptive study. All women (1.039) seeking infertility treatment at the Andrology and Fertility Hospital from December 30, 2022, to March 30, 2023 participate in the study. They were invited to scan a QR code and complete the research questionnaire. Female sexual dysfunction is assessed based on the FSFI scale included six domains: sexual desire, arousal, lubrication, orgasm, satisfaction, and pain (comprising 19 questions). The data were extracted into Excel, cleaned, and analyzed using STATA 17.0 software. The analysis of factors associated with female sexual dysfunction was conducted using logistic regression models. Results Among the 1039 participants in the study, the mean age was 30.9±5.3 years. The overall score for female sexual dysfunction was 25.09 ± 6.20, with individual component scores. The prevalence of female sexual dysfunction was 49.7%. There is a positive correlation among the six components of female sexual dysfunction, p<0.01. In the multivariate regression model, the risk of female sexual dysfunction is higher among individuals who work away from home, have an underweight body mass index, have a poor relationship with their partner, have had no sexual intercourse in the past 4 weeks, experience fear of pain, anxiety, and body image concerns during sexual activity, have infrequent or no discussions with their partner regarding sexual desires, preferred positions, and stimulation, and are dissatisfied with their sexual life. Conclusions Half of the women seeking infertility in late-stage medical care experience sexual dysfunction. Factors that increase the risk of sexual dysfunction include having a job far from home, being underweight based on body mass index, having a poor overall relationship with a partner, not engaging in sexual activity in the past four weeks, fear of pain, anxiety, body image concerns during sexual intercourse, and limited or lack of communication with a partner about sexual issues such as desires, preferred positions, and stimulation. Additionally, dissatisfaction with one's sexual life contributes to the occurrence of sexual dysfunction. Therefore, early screening and timely intervention are necessary for this group of individuals. Disclosure Any of the authors act as a consultant, employee or shareholder of an industry for: Andrology and Fertility Hospital of Hanoi.