To provide a multi-kind and small quantity production method of multistory system making effective use of production facilities and having high production efficiency.

Multiple shelves provided face to face on both sides of a stacker crane over the multistory for the storage and preservation of materials, intermediate products and products, each station arranged at predetermined stories, additional equipment and fixed equipment that are arranged at each station and carries out unit work, a moving tank and a conveyor transferring the moving tank and a material container, are provided. The predetermined material container moves to a moving tank material supply station, and the material is sequentially charged in the moving tank when a product of small quantity is produced with using multi-kind of materials. Then, the moving tank is moved to the predetermined station, and the predetermined work is carried out. When the production is completed, the moving tank is moved to a discharge station, and is connected to a filling machine. After filling the product in the predetermined container, the moving tank is washed.