Ultrasound, computed tomography (CT), magnetic resonance imaging (MRI), positron emission tomography CT (PET/CT) and positron emission tomography MR (PET/MR) are widely used in the diagnosis and treatment of colorectal liver metastases (CRCLM). Contrast-enhanced MR was the first choice in diagnosis of CRCLM by NCCN guidline. But it is important to choose the appropriate imaging modalities for each patient with CRCLM, and rationally use the limited medical resource.Combined with the literature and the authors experience in MDT. On the basis of reference to guidline and combined the patient′s own conditions, it could made reasonable decisions by multidisciplinary experts discussion for patients with liver metastases from colorectal cancer.