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Introduction: Hepatitis B virus infection is one of the most common health problems in the world. 20% Chronic hepatitis B can can change into liver fibrosis. The liver is the center of the body's Amino Acids metabolism. Amino acid changes can occur due to impaired liver function. Fisher's ratio (BCAA/AAA) has become one of the sign of liver fibrosis. This study wanted to find a relationship between Fischer Ratio values and liver fibrosis in naive chronic hepatitis B patients without comorbidities. Method: The research was conducted from October 2020-May 2021 at DR. Moewardi Hospital, Surakarta, Indonesia. Subjects were naive chronic hepatitis B patients without comorbidities with a minimum age of 30 years. The study used a cross-sectional method. Fischer Ratio values were assessed by spectrophotometry and liver fibrosis was assessed by transient elastography (fibroscan). A correlation test was conducted to determine the relationship between variables. Result: 20 patients were included in the study. The average age of the research subjects was 47 ± 10 years. The average Fisher's ratio value was 2.83 ± 1.16 and the average fibroscan value was 17.31 ± 18.50 kPa. Ratio Fischer had a correlation with liver fibrosis with r= - 0.571 (p=0.004). Conclusions: Ratio Fischer has a negative correlation with liver fibrosis in naive chronic hepatitis B patients without comorbidities.