Malnutrition is common in cancer patients but there is no international gold standard for assessing nutritional status. Patient-generated subjective global assessment PG-SGA is the most widely used tool to evaluate the nutritional status of tumor patients. Although it has been widely used in China there are still many deficiencies in practice. In our previous study we adjusted the PG-SGA to better adapt to the medical environment in China. After deleted items that more than 50% professionals think it is difficult to be finished items with item-total correlation < 0. 1 the new Chinese PG-SGA CPG-SGA was constructed. The CPG- SGA has better descrimative validity than PG - SGA in that survival difference in patients without malnutrition and mild malnutrition can be detected by CPG-SGA but not PG-SGA. Questions in CPG-SGA require no professional knowledge and may be answered by most patients. We also develop a web-based CPG-SGA questionnaire. It is readily available and convenient to answer by patient themselves. We briefly discussed three commonly used nutrition questionnaires in this review highlighting the possibility to use CPG-SGA as a new standard. We advocate and calls for researches to test and validate the prospect of CPG- SGA in China and abroad. This will undoubtedly have a profound impact on improving the nutritional status of cancer patients in China and even internationally thus enhancing their chances of survival.