Yes, but it is recommended to drink separately. Green juice is similar to vegetables, except that the raw material is barley seedlings, which is more nutritious, but like vegetables, it can promote intestinal peristalsis and accelerate digestion. Needless to say, protein powder is mainly used to supplement the body protein, which is generally used to gain muscle. Because green juice will accelerate excretion, and protein powder absorption takes time, if the two are mixed, green juice will affect the absorption of protein powder, so it is better to drink it separately as far as possible.