Stomach cancer 1b should be referred to as stomach cancer stage 1B, which usually belongs to the early stage of stomach cancer. In clinic, malignant tumors are usually divided into stage 1, stage 2, stage 3 and stage 4, and stage 1 is usually the early stage of malignant tumors, in which each stage is subdivided into two different situations, stage A and stage B. Stage 1A of stomach cancer usually refers to tumor less than two centimeters, while stage 1B of stomach cancer refers to tumor cells larger than two centimeters. Stage 1B of stomach cancer usually belongs to the early stage of malignant tumors in stomach. Early gastric cancer usually only has local lesions and the tumor cells only exist in the superficial part of the stomach without spreading or metastasis. At this time, patients can have the lesions removed by minimally invasive surgery or traditional surgery, and most of the patients can achieve clinical recovery. When gastric cancer stage 1B is found, patients should consult hospitals in time and take active diagnosis and treatment to avoid aggravation of the condition by early detection and early treatment.