Provided is a system for providing an item generation service for generating an artificial intelligence-based dynamic game environment, the system comprising: a space database unit that collects topography and weather information of at least one area, converts the collected topography and weather information into 3D content, stores the 3D content, and includes a user interface for designing and setting a real estate object corresponding to at least one building or land; a character setting unit including a user interface for setting the gender, height, weight, and body type of a character, and setting a growth rate according to a training level; an item generation service providing server including an item generation unit for generating an item having the desired size, weight, design, resistance, hardness, and durability by combining at least one type of material; and a user terminal for defining and designing each of at least one attribute forming a space, a character, and an item in the item generation service providing server, and selling, purchasing, and exchanging a completed item.