Stones of the eyelids are mainly the stones of the inner eyelids, the conjunctival stones of the inner eyelids. The formation of conjunctival stones is mainly related to the metabolites of the conjunctiva. The metabolites of the conjunctival cells are deposited under the conjunctiva to form conjunctival stones if the body does not absorb them in time or if they are produced in large quantities. Conjunctival stones are not stones in the true sense of the word, but only metabolic substances that accumulate and resemble stones, so clinically they are called conjunctival stones. If a conjunctival stone does not protrude from the surface of the conjunctiva, it usually does not cause much sensation to the eye and can be observed clinically. If the conjunctival stones have protruded from the surface of the eye, they may cause a grinding sensation in the eye, which can be relieved by going to the hospital to have the stones removed.