Abstract:Abstract: Tumor development and progression are closely related to the immune state, nutritional state, and tumor microenvironment. Traditional evaluation methods have been slightly insufficient in evaluating the prognosis of tumors, which mainly focus on the morphological characteristics of tumors instead of the immune nutritional state .Therefore, Gustave Roussy Immune Score (GRIm-Score), which is considered as new way to evaluate the tumor prognosis has been proposed in recent years. In this paper, we summarize recent application of this scoring system in prognosis assessment of patients with common digestive system malignant tumors and demonstrated that GRIm-Score is an independent risk factor for the prognosis of a variety of common digestive system malignancies, and high score often indicates poor prognosis, and may also have a certain correlation with the evaluation of immunosuppressive therapy effect.