Solid. According to JD.COM's inquiry. Com, China-China compound probiotics are solid, which can maintain its activity and play its beneficial role in promoting gastrointestinal tract patency. Solid probiotics will be in a state of functional dormancy, and only after being dissolved in warm water below 40 degrees will it stimulate its physiological activity and play its role in regulating the intestine, so it is a solid beverage. Probiotics will lose their physiological activity with the change of external temperature when they are in liquid state.