Implantation metastasis is one of the ways of cancer cell metastasis. Implantation metastasis is one of the more common ways of cancer cell metastasis, which refers to the extensive spread and metastasis caused by cancer cells penetrating the peritoneum and other spaces. Common implantation metastasis in clinic includes the shedding of gastric cancer cells to form metastatic foci in the abdominal cavity and other locations, which causes a large amount of fluid accumulation and so on. When implantation metastasis occurs, it means that the patient’s tumor cannot be completely removed, and it belongs to the late stage of the disease, and the patient’s prognosis is poor, and the patient needs to undergo chemotherapy combined with targeted therapy in the treatment. It is suggested that patients should still keep a good mindset and take active treatment in order to prolong the survival period.