Whey protein is a high quality animal protein extracted from milk, protein powder is mainly a combination of whey protein, casein and soy protein. Whey protein is a mixture of globular proteins extracted from milk, which is easily digested and absorbed, with high bioavailability, and is useful for fitness, prevention of muscle atrophy in old age and maintenance of serum albumin. Protein powder is a purified combination of proteins, such as whey protein, casein and soy protein, digested and absorbed more slowly, if suffering from indigestion, renal failure, gout should not be consumed. Whey protein and protein powder can supplement the body with certain nutrients, if you need to consume these two foods, it is recommended that you ask a professional dietitian to combine your own situation to choose.