The invention discloses a three-dimensional modeling method and system. The method comprises the steps that original data of a target modeling article is collected, the original data is shared and stored, and a corresponding modeling task list is added; load balancing is performed according to the modeling task list and the task processing condition of an initial model production terminal which iscurrently logged in, and an appropriate production terminal is selected to distribute an initial modeling task; an operator of the initial modeling task is received, the original data is read, initial model production is performed according to modeling requirements, and the initial modeling task is submitted after an initial modeling result is formed; after task distribution software receives theinitial modeling task, a fine modeling task is distributed according to the task processing condition of a fine model production terminal which is currently logged in; and after the fine modeling task is received, an operator of the fine modeling task acquires the stored initial modeling result, fine model production is performed according to the initial modeling result to form a fine modeling result, and the fine modeling task is submitted. Through the three-dimensional modeling method and system, the overall ability requirement on model data production personnel is lowered, and the production efficiency of three-dimensional modeling is improved.