Overview of domestic development: In recent years, China has achieved rapid development in the pump industry, but most of the pump manufacturing companies in China are small, their products are not updated fast enough, and the quality is not high enough. In many respects, there is still a big gap with foreign pumps. At present, the supply of general industrial pumps exceeds demand, and high-level, high-quality special products are in short supply, and they need to be imported from abroad. There is a large gap between the level of products and the requirements of users. The phenomenon of irrational industrial structure and product structure is particularly obvious. Products have reached the advanced level of the contemporary world very few, and most of them only reached the level of the late 1980s and early 1990s, which cannot adapt to the changes in market demand structure. On the one hand, the product backlog is serious, and on the other hand, the trial production of products urgently needed by the market is too slow or in short supply to break the pattern of traditional products. The dynamic gap with foreign countries has not narrowed, and the situation is not optimistic. In the design of the pumping station, only a limited number of finalized products with similar performance can be selected, which not only reduces the efficiency of the pumping station, but also leaves many unsafe hidden dangers. Most of the water pump manufacturing enterprises in China are small in scale and lack high-precision processing, testing and other process equipment. New processes, new materials, and new technologies (including CAD\CAM, etc.) have not been widely promoted and applied. Overview of foreign development: The development of foreign pumps is faster and the technology is more advanced. Pumps manufactured by large foreign pump manufacturers generally have the advantages of high speed, small size, and light weight, and their flow is 1.5 to 2 times that of our country's water pumps of the same caliber. Especially in the Netherlands, Japan, the United States, the former Soviet Union and other countries, the performance indicators of water pumps are significantly better than those of domestic ones. The Netherlands pays more attention to investment in scientific research, its scientific research strength is very strong, the facilities are relatively complete, and the water pump and its inlet and outlet channels are relatively systematically studied. Foreign countries, especially those with relatively advanced industrial level, are indeed worthy of our learning and reference in the design and manufacture of water pumps and their emphasis on water pump research, but it does not mean that they are perfect in the field of water pump design and manufacturing. It is also the same. It is necessary to make a breakthrough in important parameters such as the pump head and flow rate, which requires investment in the improvement of the pump mechanical structure. With the development of science and technology, the domestic and foreign pump industry is developing towards large-scale, high-speed, high-strength, high-pressure, high-reliability, long-life, system control and integration of mechanical and electrical instruments. Among them, life, Reliability and automation have become the main considerations when choosing a pump.