Overall layout of convenience stores and small supermarkets: Generally, the cashier of convenience stores in small supermarkets is located on the right side of the entrance. If it can be located on the left side of the entrance due to structural and dynamic reasons, valuables should be placed behind and beside the cashier, and beverage display cabinets and yogurt display cabinets should be placed near the door opposite the cashier. Small commodities are easy to be stolen and not easily found by customers, so small commodities are generally placed around the checkout counter, mainly non-staple food, and daily necessities are placed behind. The interrelated goods should be connected together to facilitate the chain purchase of customers. If it is the facade of a commercial street or a convenience store near restaurants and entertainment, it is enough to make at most 3-5 shelves for daily necessities, with at least 0.9- 1.2 m for the main passage and at least 0.6 m for some areas due to the conflict between area and equipment size. The shelf size of Nakajima is 1.4 m-1.