By the end of 2019, there were 3437 immovable cultural relics in the city, including 40 national key cultural relics protection units, 227 municipal cultural relics protection units, 423 district cultural relics protection units and 2747 district cultural relics protection points, showing a reasonable "pyramid" structure. At the same time, the city's historical and cultural resources have gradually formed a "point, line and surface" protection system. This is the "big data" disclosed in the development report of Shanghai cultural relics protection engineering industry 2021, which was launched a few days ago. As the first blue book in Shanghai to reflect the development process, current situation and Prospect of the cultural relics protection engineering industry, the report was compiled by Shanghai Cultural Relics Protection Engineering Industry Association for two years, filling the gap of comprehensive data indicators in the field of cultural relics protection engineering in Shanghai, and has important milestone significance. "Many ups and downs, many achievements!" Wu Jiangru, a professor at Tongji University, summed up the history of the protection of immovable cultural relics in Shanghai. He said that Shanghai has always been in the forefront of the country in the field of modern building protection. A general survey of modern representative buildings was carried out in 1988. After that, according to its own heritage characteristics, it took the lead in local protection legislation in China, and gradually established a protection object and management system combining "urban village" and "point, line and surface". In accordance with the principle of "protecting as much as possible", establish immovable cultural relics and excellent historical buildings at all levels, and delimit areas with historical and cultural features. Compared with other provinces and cities, there are relatively few ancient ground cultural relics in Shanghai, but there are abundant modern buildings. Zhuo Gangfeng, executive vice president of the historical building protection design institute of Huajian group, believes that the protection of historical buildings in Shanghai is to cross the river by feeling the stone. There are not many cases to learn from in China, but we can not copy foreign experience because the national conditions and development stages are different. Shanghai has formed a set of mature methods and systems by slowly exploring on its own. The development report 2021 of Shanghai cultural relics protection engineering industry has combed and studied the cultural relics protection engineering industry in Shanghai in a full field and panoramic way, which is a real file. The book is divided into four chapters and 16 sections, systematically summarizes the external influence and internal driving force affecting the development of the industry, publishes the key big data of the development status of the survey, design, construction, supervision and other fields of Shanghai cultural relics protection engineering industry for the first time, and collects the excellent cases of Shanghai Architectural Heritage Protection in recent years. They not only include the protection and repair of cultural relics, but also new projects in the cultural relics control zone, which has a certain reference value for how to protect and utilize cultural relics, and also has a certain reference significance for the protection of environmental features around cultural relics and the coordination of old and new buildings. "Whether it looks good or not is not the only value of historical buildings, or even the main value; nor does it necessarily mean that the longer the time, the higher the value. The key is the story behind it and the historical, cultural, artistic, scientific and technological values it carries." In Wu Jiang's view, more and more historical buildings have become online Red punch in places, which shows that the protection consciousness of the whole society is becoming stronger and stronger, and has a close relationship with modern life. However, we should not only regard the buildings bearing historical value as scenes, but they should be integrated into the scenes of daily life. "Historical and cultural heritage is the soul of the city and an important part of the city's soft power. It is extremely difficult for them to survive after the waves wash away the sand. It is the responsibility of contemporary people to use the strength of the whole society to protect, inherit and utilize them." "We should not only protect the single buildings, but also protect the surrounding blocks, so as to truly protect the vitality of the building." Writer Chen danyan expressed deep appreciation for Shanghai's never widening 64 roads in the central urban area. She believes that by protecting the streets connected with buildings, the memory and history of the city have become a touchable and perceptible part of people's daily life. (outlook new era)