Intracochlear schwannomas (ICS) are a rare subgroup among vestibular schwannomas. Due to their location in the inner ear, the tumors usually become symptomatic with hearing loss, and/or vertigo, already when still very small. The intracochlear location of this tumor causes deafness after surgery. However, if modiolus is preserved and cochlear implantation is performed at the same time, the patient's hearing may be preserved. Herein, we report a rare case of ICS patient who underwent tumor removal from the cochlea preserving modiolus with cochlear implantation. The patient was 56 years old, female, initially diagnosed with sudden sensorineural hearing loss, and later diagnosed with ICS by magnetic resonance imaging (MRI). The surgical approach was through a retroauricular incision and involved a simple mastoidectomy, and posterior tympanotomy. Cochlear tumor resection was done through the posterior tympanotomy approach and subtotal cochleoectomy without macroscopic tumor remnants in the bony labyrinth including modiolus. After tumor removal, cochlear implantation was done via the round window. There was no postoperative infection or facial paralysis. In patient with ICS, surgical tumor removal such as the subtotal cochleoectomy approach and cochlear implantation can achieve both goals of tumor removal and hearing preservation.