The hepatic turbinate boundary refers to the medical percussion to determine the location of the upper and lower borders of the liver, and this boundary is called the hepatic turbinate boundary. In a normal person, the lungs are dominated by gas, and the alveoli are filled with gas. However, the lower part of the lung and the liver are close to the upper part of the lung that surrounds the liver. The liver is a solid organ, and the normal percussion of the liver should be heard as a solid tone. However, the part of the liver that is surrounded by the lung is partly lung tissue and partly liver tissue, so the area is distinguished between clear and solid tones, which we call turbid tones. Therefore, when percussion is performed from the chest lung downward, each intercostal area is successively buckled downward, and when it changes from clear tones to turbid tones, this boundary is called the turbid boundary of the liver. The general location of percussion is the right mid-clavicular line, the right mid-axillary line and the right scapular line to percuss the turbid boundary of the liver.