Unit price refers to the price per unit quantity of goods, and also refers to the minimum unit of valuation of goods. As the name implies, it refers to the price per unit quantity. The unit price is relative to the total price, usually the unit price multiplied by the quantity equals the total price. In terms of proportional relationship, it means that the quantity is fixed, the total price is directly proportional to the unit price, the unit price is fixed, the total price is directly proportional to the quantity, the total price is fixed, and the unit price is inversely proportional to the quantity.