MRI of the liver can examine some benign lesions, such as fatty liver, liver cysts, hemangioma of the liver, focal nodular hyperplasia, and adenoma of the liver. It can also detect malignant lesions, such as hepatocellular carcinoma and liver metastases. Liver cancer detection has its unique specificity and sensitivity. Because liver cancer usually occurs in patients with hepatitis and cirrhosis, its evolution generally ranges from regenerative nodules to atypical hyperplastic nodules and finally develops into small hepatocellular carcinoma, with different signal characteristics manifested at each stage. Nowadays, liver-specific contrast agents will be clinically important for early liver lesions, detection as well as detection. Gallbladder MRI can detect common gallbladder stones, gallbladder adenomyosis, and gallbladder cancer. MRCP examination, also known as magnetic resonance pancreaticobiliary imaging, is simple, rapid, and highly accurate, without the application of contrast agents. This examination will be more effective for biliary tract diseases, especially obstructive jaundice, and can further clarify not only the site and number of biliary stones, but also the site, extent and pathological nature of obstruction, providing further diagnostic basis for clinical diagnosis.