With the large-scale construction of city gas pipeline, increasing natural gas pipeline leakage accident disasters caused by the gas monitor is an important on-line measurement instrument for the safety operation of the network of natural gas, which has the characteristics of multi-varieties, style complex, complex procedures, automatic production, low digital level by making multi-varieties small-batch gas monitor as the main the mode of production. In order to solve that the traditional digital manufacturing job shop cannot meet the modern multi varieties and small-batch production of gas monitor manufacturing requirements, based on the complex production process of digital equipment, digital control, digital key technology, it proposes a gas monitor job shop solution based on intelligent manufacturing, construction of the implementation of the integrated framework and implementation activities of information flow model to realize the bottom equipment layer, design and manufacture of middle management and intelligent control layer. It has proved that multi-varieties small-batch of digital manufacturing job shop manufacturing process and development has a good application effect and can provide a reference model for the multi varieties small-batch manufacturing precision instruments in the production, greatly saving the production casting time cost, production cost and resource cost.