由于城市铜雕作品要在室外长期存放，决定了其使用的材质必须是能经风耐寒的硬质材料。从城市铜雕的起源和功能上可以看出，人们正是着眼于他的永久性。物质材料的永久性用于承载所表达的思想观念的永久性，也保证了艺术形象的永久性。
Because of the long-term storage of urban bronze sculptures outdoors, the materials used must be hard materials that can withstand wind and cold. From the origin and function of City Bronze sculpture, we can see that people just focus on his permanence. The permanent use of material materials to carry the expressed ideas and concepts also ensures the permanence of the artistic image.
城市铜雕作品一方面固然是为当代所建，但另方面客观上也是为了千百年后的后代而制作，在遥远的未来仍将发挥作品的艺术感染力。许许多多优秀的古代雕塑能保存至今，抵抗住了自然和岁月的销蚀，也正是由于这一点。可惜有许多作品却因人为的因素，如战乱、社会政权的更迭和政治的动荡而毁于一旦。
Urban bronze sculptures, on the one hand, are built for the contemporary era, but on the other hand, they are objectively made for future generations after thousands of years. They will still exert their artistic appeal in the distant future. Many excellent ancient sculptures can be preserved to this day, resisting the erosion of nature and time, which is precisely because of this. Unfortunately, many works have been destroyed by human factors, such as war, the change of social regime and political turmoil.