国家认同对维护国家统一有着重要的意义，于内能够凝聚民心，于外可以应对全球化的挑战，对国家认同建构的研究不仅有利于我们更加重视保护本国的历史与文化传统，还能够在全球化进程中稳固我们国家的根基不受动摇。随着我国社会文化产业的蓬勃发展，电影这一影视媒介，作为一种大众化的文化传播方式开始对人们的思想观念产生着不可忽视的影响。而在众多的电影类型之中，我国的主旋律电影不仅仅具有观赏娱乐作用，更重要的是承担着主流价值观与意识形态的传播功能。它作为一种重要的国家文化表现形式，蕴涵着鲜明的国家意识形态，在国家认同的建构方面可以发挥巨大的作用，能够增强国民对国家的责任感，激发群众的爱国热情。对于我国而言，充分发挥新时代主旋律电影对于当代社会公众的柔性引导，是在当下建构和增强我国国家认同的一个重要方式。
文章第一部分梳理了国家认同与新时代主旋律电影的基本理论，包括国家认同的内涵及构成，并确定了后续聚焦于国家认同中的情感层面形成的探究；新时代主旋律电影与传统主旋律电影相比，在建构国家认同方面突显出了新时代的特征：英雄人物塑造更加生动、叙事视角开始转向微观个体、创作模式实现了多方平衡，这决定了其建构国家认同的两个主要途径——英雄人物的塑造与集体记忆的重现。
第二部分阐述了新时代主旋律电影如何通过英雄人物符号塑造实现国家认同的建构，通过展现新时代英雄人物的成就增强民族自豪感，凸显英雄人物的牺牲唤起民众的国家使命感，并将新时代英雄人物的性格塑造的更具人性化。但与此同时，新时代英雄人物符号的塑造在当今也存在被批判带有个人主义的难点。
第三部分对新时代主旋律电影的集体记忆叙事进行考察与分析，新时代集体记忆的材料选择主要包括创伤记忆与胜利记忆，具有重视历史的仪式化与符号化展现，注重个体叙事视角的刻画，突出人类命运共同体理念的新时代叙事特征。在当前，新时代集体记忆叙事存在内在逻辑性不强这一叙事上的难点。
第四部分结合前文对于我国新时代主旋律电影存在的难点分析，提出对于其未来发展的一些提升建议。应当在新时代主旋律电影中突出个人、国家与世界的联结关系，并在坚持集体主义与革命英雄主义的基本前提之下，合理适当地在电影中融合多元价值观，增加其文化影响力，并增强主旋律的故事内涵，促使我国的新时代主旋律电影有更为广泛且深入的传播，进而达到增强国民国家认同的效果。

National identity is of great significance to safeguard national unity, within all hearts, in the outside can cope with the challenge of globalization, the research of constructing national identity is good for us to look more serious national historical and cultural traditions, to establish the national consciousness better, in the tide of globalization is able to keep the foundations of our nation. With the vigorous development of China's social and cultural industries, film, as a popular way of cultural communication, has begun to exert a significant influence on people's ideas. Among the numerous film types, the theme film of our country not only plays an entertaining role, but more importantly, bears the function of spreading mainstream values and ideology. As an important form of expression of national culture, it contains a distinct national ideology, which can play a huge role in the construction of national identity, enhance the responsibility of the people to the country, and stimulate the patriotic enthusiasm of the masses. For China, it is an important way to construct and strengthen the national identity of Chinese citizens to give full play to the guiding role of the theme films of the new era.
The first part summarizes the basic theories of national identity and new era theme films, including the connotation and composition of national identity, and determines the subsequent research focusing on the formation of the emotional level of national identity. Compared with the traditional theme films, the new era theme films highlight the characteristics of the new era in the construction of national identity: the hero characterization is more vivid, the narrative perspective begins to turn to the micro individual, and the creative mode has achieved a multi-dimensional balance. It determines the two main ways of the construction of national identity: the shaping of heroes and the reappearance of collective memory.
The second part elaborates how the theme film of the new era realizes the construction of national identity through the symbol shaping of heroes, enhances national pride by showing the achievements of heroes in the new era, arouses the people's sense of national mission by highlighting the sacrifice of heroes, and shapes the characters of heroes in the new era to be more humanized. At the same time, the shaping of hero symbols in the new era is also difficult to be criticized as individualism.
The third part studies and analysis of the collective memory of narrative materials selection for the new era of collective memory consists of traumatic memories and memory, with emphasis on history of ritualized and symbolic show, pay attention to the depict of individual narrative perspective, highlight a new era of human destiny community concept narrative characteristics. At present, the narrative of collective memory in the new era has a difficult point that the internal logic is not strong.
The fourth part combines the previous analysis of the difficulties existing in Chinese new era theme films and puts forward some thoughts on its future development. Shall, in the new era theme movie in outstanding individual, country and world coupling relationship, and insisted on collectivism and revolutionary heroism, under the precondition of reasonable proper fusion of multiple values in the movie, to increase its influence in the culture, and enhance the connotation of the story of the main melody, make our country in a new era of the spread of main melody movies have more extensive and in-depth, Furthermore, it can enhance the national identity of the citizens.