The work "Mobile Phone" tells the story of an old man living alone at home with a heart attack at night and a fracture on the ground. After that, he wanted to use his "mobile phone" to call for help. With the help of his pet turtle, he laboriously got the mobile phone, but could not unlock it. After that, he was in a coma and called for help after dawn, but finally passed away. Due to the strong auditory and visual communication of animation, and its intuitive expression form can be easily accepted by the public, the aesthetic feeling and impact of animation can capture the eyeballs of people in fast-paced life while conveying correct values to the audience. In order to make people pay enough attention to the social problems of the elderly living alone, the work adopts the way of two-dimensional animation short film. In the script, the theme of the short film is "the old man living alone falls down at home and cannot ask for help", and the script creation is completed in combination with the real life of some old man living alone. In the content, the current situation of the old man living alone at home is described in a humorous way. In the animated short film, the card "call-son" left by his son to the old man living alone appears many times, which is intended to satirizes the modern children's way of "remote care for his parents. The work uses the two-dimensional painting software Paint Tool SAI to complete the drawing of characters, scenes and split mirrors. Adobe After Effects software is used to complete split-lens animation and special effects animation. Adobe Premiers software is used to edit and dub the material and output animated short films. The work uses a long lens to show the lonely life of the elderly during the day and at night, and uses exaggerated techniques to show the scene of the elderly wanting to get a mobile phone after falling down, which makes people more deeply understand the difficulty of living alone for the elderly. Through this short film, people are called on to pay more attention to the elderly living alone.