To enable to easily catch hold of environmental load in a life cycle of a product.

The device is provided with an inputting means 21 for inputting information peculiar to the product such as respective components, materials and quantity of the product, a processing means 22 in which the environmental load in the life cycle of the product is modeled in to an environmental load at production and usage stages and an environmental load at scrapping and recycling stages of the product, information peculiar to the product such as the respective components, materials and quantity of the product is separately inputted corresponding to the product, information about the components, materials, inputting energy, etc., of the product is obtained based on previously prepared statistical data and is calculated based on the model and an outputting means 23 for outputting processed results by the processing means. Consequently, a detailed process analysis over the whole life cycle of the product is unnecessary and as figures can be drawn while inputting data, environmental influence evaluation can be made while easily confirming.