人物情感的表现在动画中有十分重要的地位，优秀细腻的情感表达能够引起观众对角色的共鸣。作为日本动画导演中备受期待的中坚力量，细田守导演的特点之一即是在画面上对人物细腻情感有非常强大的表现力。中国动画电影及电视动画在人物塑造和情感表达上与世界先进国家比较还存在一定的差距，而细田守在中国国内的关注度和研究程度也较为有限，以其代表作《夏日大作战》为例对画面表现进行深入的研究和探讨能够带来对创作者和研究者的启发。 《夏日大作战》讲述了一个混合亲情、爱情和友情的成长故事，它以独特的细腻而戏剧化的表达描绘了主人公及众角色的成长和情感变化。本文以动画视觉语言作为切入点，分别从画面元素和镜头元素两个方面对该作品的情感表达手法进行分析。画面元素上，笔者着重于影片中相对风格化的形态设计、动画表演、色彩与光影和情感象征设计，研究其对情感表达突出的作用；镜头元素中则聚焦镜头的节奏、固定镜头和运动镜头，逐一细化分析《夏日大作战》的镜头语言加强情感表达的主要手法。细田守追求平实、细腻的风格，而画面元素与镜头元素亦呈现出手法多样，同时保持风格统一、和谐的特点，使总体影片有着稳重、平和、真诚的基调，角色的情感自然质朴、细腻而动人。

Characters’ emotional expressions in animation are essential, for the rich and exquisite inner world of the characters resonates strongly with the audiences. Hosoda Mamoru, who is strongly anticipated to be the pillar of the next generation of Japanese animation, is a director that has strong expression on characters’ refined emotions. Characters creation in animated films and TV animations of China has a certain distance from advanced countries. Researches based on Hosoda Mamoru are limited, so the author concentrates on exploring and researching the image performance of one of his works Summer Wars, in hope of bringing inspirations for future creators and researchers. Summer Wars pictures a story that is mixed with complicated feelings of family, immature love and friendships. It uses delicate and theatrical expressions to illustrate the growth and emotional changes of the characters evolved. This paper uses the animation visual language as a breakthrough point and analyses the work’s emotional expression respectively through the element of frame and shot. In the element of frame, the author looks into the stylized configuration design, animation performance, lighting and color and emotional symbol design. As for the element of shot, the author focuses on lens time rhythmic variation, fixed shot and shot movements. Within Hosoda Mamoru’s warm, simple and unadorned style, diversified approaches are used to contribute to the unity and harmony of the integral style of the whole film, which help the characters to show realistic and moving feelings.