If the body needs, protein powder consumption time, there is no clear limit. Protein powder contains protein components are more concentrated, can provide protein for the body, such as post-surgery, trauma, malnutrition and other patients, can be used under the guidance of a doctor, in general, there is no clear limit on the use of time. However, it should be noted that some groups of people may not be suitable for use, such as cirrhosis of the liver, renal failure patients, a large amount of protein intake may increase the burden of liver and kidney excretion, or even aggravate the condition; newborns, gout patients and other groups, should not be consumed. For healthy people, as long as attention is paid to a balanced diet, food diversification, there is generally no lack of protein, not blindly use protein powder. Soybean, milk allergy should be cautious to eat protein powder.