There are 30% to 40% of advanced gastric cancer patients who lose the opportunity of curative surgery at initial diagnosis, so chemotherapy is recommended as the main treatment modality, however, the overall prognosis is poor. Recently, a number of phase II( studies show an enormously ideal potential of conversion therapy in these patients. Conversion therapy uses rational chemotherapy, radiotherapy and targeted therapy and so on combined with MDT assessment to translate initial unresectable case to resectable one, which obviously prolongs survival time and improves quality of life. In this review, we address the indications, development and our experiences of conversion therapy in advanced GC, which looks forward to providing the reference to clinical diagnosis and treatment.