With the Covid-19 epidemic in our world, masks have started to be used in schools. The mask, which covered half of the face, revealed problems such as hearing sounds, speaking, pronunciation, understanding language, seeing facial expressions, and lip reading. This situation has brought up research on the effect of the mask on students' language skills. In this study, scientific studies dealing with the effects of masked education on students' language skills were examined. Case study, one of the qualitative research methods, was used in the research, and studies published in 2020 and 2021 were selected. Using various keywords on the subject, 42 studies were reached, 10 of them were excluded and 32 scientific studies were examined. The findings obtained as a result of the research were analyzed and interpreted. It was determined that most of the studies examined were aimed at preschool and primary school students, quantitative methods were used, and the data were collected through interviews. In the research, it was determined that the effects of masked education focused on breathing, voice, speaking and pronunciation, perceiving and understanding words, facial expressions and nonverbal communication, language learning and reading, and language skills development. It has been determined that students have problems such as hearing sounds, speaking, understanding pronunciation, not being able to see facial expressions, and not developing their language skills sufficiently. At the end of the research, suggestions were made to the teachers such as speaking loudly, using a microphone, making short sentences, making more use of body language, and using a transparent mask.