Due to the recent introduction and rapid growth of the nail industry, there are not enough size specifications and systems available for nail product development. The purpose of this study is to analyze the suitability between korean women nail type and the size type of commercial artificial nail tip, to suggest an alternative to the product size system. The study was conducted on 600 women in their 20s and 40s in Korea. The items were 1 vertical lengths of nails, 2 horizontal widths, 2 horizontal side widths, so total 5 items. On the commercial artificial nail tips of 10 companies, 2 horizontal widths and 2 horizontal facial widths, so total 4 items set as measuring points. All were directly measured and analyzed. Four types of nail types in adult women were derived as the most reasonable. As for the morphological(shape) characteristics of each type, type one was classified into the largest group of five nails, and the second type was the smallest group of five nails. In type 3 and 4, the 5 nail sizes showed a similar value to the average, but there was a morphological difference between the thumb, index finger, and middle finger. When the classified nail size was applied to 1 to 10 sizes of commercially nail tips, it was confirmed that the nail tips were distributed intensively in the artificial nail tips of 8 and 9, and the deviation between the nail tips, 3 to 4 and 6 to 9, were bigger by 1mm. And the deviation between the remaining was irregular. Therefore, increasing the subdivision of the artificial nail tip according to the characteristics of each type, is a solution to improve the size suitability.