Inclusion Criteria:  Clinical diagnosis and imaging diagnosis of MAFLD and BMI index greater than or equal to 23kg/m2； The age of the recruiter is between 18-65 years old; Those who can cooperate with various treatments and data measurements according to the treatment cycle, and can persist in completing the test; Those who accept and are willing to sign the informed consent.  Exclusion Criteria:  Potential recruiters who meet the inclusion criteria will be excluded if they meet any of the following:  Those who routinely take prescription drugs (except regular contraceptive drugs) or those who use auxiliary Chinese and Western drugs to treat non-alcoholic fatty liver; Patients suffering from viral hepatitis, autoimmune hepatitis, hepatolenticular degeneration, hypothyroidism, infection, and biliary tract diseases that lead to abnormal liver function; Patients who have taken the following drugs in the past 4 weeks: hypoglycemic drugs, lipid-lowering drugs (such as statins, fibrates, etc.) and drugs that may affect liver fat content (such as: silybin, ursodeoxycholic acid) , Bicyclic alcohol, phosphatidylcholine and vitamin E, glucocorticoid); Patients with diabetes or those who have undergone bariatric surgery; People who have gained or lost weight by 10 kg or more in the past two months; People who are allergic to limonene capsules; or people who are allergic to citrus foods; people who especially like to eat a lot of citrus foods (daily dosage more than 100 grams); Patients with severe cardiac insufficiency and malignant tumors; Patients who have a history of mental illness and cannot cooperate with this project; Pregnant and lactating women, or women or men who are willing to become pregnant or give birth during the study; Participate in any other clinical trials; Other situations where the researcher thinks it is inappropriate to participate in this research.