Abstract: Boilers are a kind of widely used heating equipment in long distance pipelines and oil fields, having such characteristics as high heating efficiency, safety and reliability, wide applicability, stable performance and being convenient in operation.The development of boiler tachnique is summerized in the paper with the introduction of a 5 000 kW controlled by a computer, its performance, characteristics and the results of research and production, tests and operation. This boilor has been in use for a year or so, 60%-70% of the cost of indirect heating system of diathermic oil which shares the same heat load, but much smaller in dimension. Taking the flowrate parameters of Pu-Lin Pipeline for calculation, it can save 1 million yuan (RMB) for the fuel consumed annually.It was authenficated as one of the scientific achievements by CNPC in Dec, 1993. The Authentics Certificate says: "Computer controlled direct heating boilers are of light package structure, with the lining of folded pads of aluminum silicate fibre which is fireproof, and the neumatic atomizing burner with the ait and oil mixed outside of it, optiomizad by computers for burning control of double crossing and double direction range control system, etc are used in a compressive way and make it possible for the average heat efficiency get to 91%. According to the latest documentation published, it is the first applicationin in China, close to up-to-date world level.