The article analyzes factors affecting job satisfaction of accountant and auditors at Hanoi auditing firms. For quantitative research methods, it is conducted through the collection of questionnaire survey data and processed by SPSS software to analyze data using the following techniques: Descriptive analysis, Cronbach's Alpha test, EFA exploratory analysis, multiple regression analysis. The research results show that the nature of work, relationships with leaders in the working process are the most influencing factors on the satisfaction of accountants and auditors in Auditing firms in Hanoi. From the research results of factors affecting the job satisfaction of accountants and auditors at auditing firms in Ha Noi, the author gives some recommendations to improve the level of job satisfaction, thereby improving the work quality of the accountants and auditors at the Hanoi auditing firms.