Hearing has vital importance for language development. Deaf and hard of hearing children have problems in spoken and written language due to hearing loss. The development of written language is directly related to language skills such as listening, speaking, and reading skills. This study aims to evaluate the use of language components in written language in deaf and hard of hearing students. In the study, writing samples of eight deaf and hard of hearing students who continue 4th grade in the school for the deaf were taken and error analysis was conducted. Besides, interviews were made with their classroom teacher about their language development, and in-class observations were conducted. It was seen as a result of the study that deaf and hard of hearing students have significant difficulties in all components of language in written language.