The present invention relates to a hair brush for treating scalp disease, the hair brush comprising: a handle which is formed in the shape capable of being gripped by a hand, has a manipulation installation groove, formed on an upper side, and an injection hole formed on a lower side to allow a scalp treatment solution to be injected in an inner space, and forms the inner space which is formed therein and can contain the scalp treatment solution； a pump unit comprising a pump post which is inserted and installed in the manipulation installation groove, has a post installation groove on an upper portion, and has an inner space, a pump side which divides the inner space of the pump post into an upper space and a lower space and has a hole in a center, a valve which opens and closes the hole of the pump side by pressure, a piston which compresses and relaxes a lower space, an upper hose which is joined to one side of the upper space and sprays the scalp treatment solution to scalp in accordance with compression and relaxation by the piston, and a lower hose which is arrange on a lower side of the lower space and pulls the scalp treatment solution in the handle to the lower space； a treatment unit comprising a bar-type body which is inserted and installed in the post installation groove and has a protruding joining part, a vibration axis motor which is embedded in the joining part, is joined to the post installation groove, and vibrates the body in accordance with rotation, a vibration motor which is embedded in the body and massages scalp by applying vibration, a treatment plate which is arranged on the vibration motor and has a tool for treating scalp, a comb teeth plate which is arranged on the treatment plate and has comb teeth for aligning hair, and a body case which is joined to a front surface of the body and prevents inner components from being displaced； and a control unit comprising a battery for supplying power to the vibration motor, the treatment plate, and
