The present invention relates to a novel acid-base addition salt composed of a class of berberine and a pharmacologically active organic acid, its preparation method and as a preparation method for preventing or / and treating various diseases or dysfunctions, such as diabetes, diabetic complications, Dyslipidemia, dyslipidemia in statin non-tolerant patients, hyperlipidemia, hypercholesterolemia, hypertriglyceridemia, diabetes combined with dyslipidemia, obesity, metabolic syndrome, prediabetes, inflammation, cancer, and various liver diseases Or dysfunction, such as fatty liver, non-alcoholic fatty liver, non-alcoholic steatohepatitis, cholestatic liver disease, liver transplantation versus host disease, chronic liver disease caused by viruses, and alcoholic liver disease, etc., have broad application prospects.