Rationale:The Descemet layer is a dense layer of tissue that does not detach under normal circumstances. Descemet layer detachment may occur after intraocular surgery, but the Descemet layer spontaneously detached after trauma in this child, which is relatively rare. After looking for the cause, we found that the child was diagnosed with congenital glaucoma, and the trauma induced the Descemet’s membrane detachment.Patient concerns:The parents of the patient expected the child to recover the normal shape of the cornea as soon as possible, improve vision, and solve the problem of congenital glaucoma.Diagnoses:The patient was diagnosed with Descemet's membrane detachment of the left eye and congenital glaucoma in both eyes.Interventions:During operation, inflation gas is injected into the anterior chamber, the Descemet’s membrane is reset, and glaucoma surgery is performed.Outcomes:The Descemet’s membrane in the child’s eye was reset, and after glaucoma surgery, the intraocular pressure of the child was normal.Lessons:The analysis of the disease is not only to solve the problems seen but also to deeply analyze the internal causes and pathological changes in combination with the symptoms and signs, so as to discover the essence of the problem and solve the fundamental problem of the patient.