Abstract:Long-distance monitor and control pattern based on Internet/Intranet is given more and more attention. However, long-distance industrial control result a lot of problems. One of these typical problems is its difficulty to regulate the transmission time on the Internet. Just because of them, some industry enterprise asking for high real time ability meet with lots of difficulties to realize long-distance control on the Internet. But they also cry for experts’ online instructions by reason of craftwork and technique complicacy. Aiming at ammoniacal synthesis manufacture technique, an ammoniacal synthetical optimization online instruction system based on GIS is researched and developed. The experiment shows the research can help people to solve complicated producing problem.