The inventory system of small grocery S.Charoenpanich (ส.เจริญพาณิชย์) is paper-base system which is keep all of the data such as stock level, invoice, historical of stock will be keep in from of hand writing. So, there are a lot of paper work, data is less accurate and efficient, do not up to date, hard to search, edit, and have risk to less the data. Therefore, inventory system of S.Charoenpanich (ส.เจริญพาณิชย์) will be developed for stock management transfer paper-base system to be computerize.