Nowadays, in the e-generation, the business intelligence system has become the indispensable tool to cope with the constantly changing environment for all the medium to large corporations. Some of them still stay behind the stage of developing their own business intelligence system simply from a set of software bought from the market. But the fact is that the utilizing of the BI software is just like the top of the iceberg emerging from the water, 92% below the water is the part of infrastructures which demand proper setup. The research is basically a case study and the target is a manufacturer. We are trying to record all the steps, procedures and important details by exact examples when they were establishing their own BI systems. The procedure of the BI system development are as follows: (1) Understanding of the corporate information environment. (2) Appraisal of the software. (3) Draft the system setup plan. (4) System analysis. (5) System platform setup. (6) Data warehouse system setup. (7) Business intelligence setup.