Cancer is one of the deadly diseases in today's world. There are various types of cancer brain, lung, skin, liver etc. Cancer detection has been a challenging task. Early detection of cancer has bright chance of curing the disease. Detection takes a very crucial role in curing the deadly disease. The process of detection can take preprocessing, segmentation, feature extraction and classification. Preprocessing is the stage where the noise could be removed segmentation can help in splitting the image into various fields and feature extraction could help in extracting the feature and classification can classify and detect the final cells. This paper discusses on different papers which reviews on the detection of skin cancer.