Today, when the medical needs of the elderly have greatly increased and their physical and mental health needs to be paid attention to, it is of great significance to combine powerful, intelligent and convenient mobile applications to effectively relieve pressure. However, most of the existing electronic medical assistants are complicated to operate and are not targeted to the elderly, which causes the elderly to feel troubled and even cannot use them. Therefore, we have made an APP "safety companion" in the aspects of accompanying the elderly and intelligent medical treatment, with the design concept of "accompanying you with your health at all times" and the goal of intelligent companionship and careful care. We have comprehensively considered the safety, convenience and special needs of the elderly, and paid attention to the physical health of the elderly as well as the spiritual companionship, strongly to create a real intelligent help the elderly, close to the elderly, suitable for the elderly medical assistant. "An Time Companion" aims to serve the elderly in an intelligent way. Drug information can be automatically added to the corresponding plate by scanning the source code, and the system will automatically generate a reminder of whether to expire. The reminder of taking medicine can also be automatically set by scanning the code and can be supplemented by personalized modification. The virtual image can be interacted with by voice. "Anshi Companion" focuses on the elderly and effectively help the elderly. It is very rich in functions, and it is carefully designed for the elderly. The operation mode, interface characteristics, and specific service content provided are all different from the existing apps on the market. Most of the existing medical assistant APP in the market has a huge amount of text, a lot of information, and a dense distribution of keys. However, the "An Time Companion" interface is simple and distinct in design, with clear key distribution and matching with intuitive large icons, font enlargement, extensive use of visual methods to replace text, and video graphics and voice to convey information and operate. "An Time Companion" strives to be easy to operate. It is mainly based on simple operation such as scanning code, voice and sliding selection. At the same time, "An Time Companion" contains a large number of guides, including APP novice tutorials, video graphic guides, large icons with bright themes, and voice guides with virtual characters, which are convenient and easy to understand. These are all different from the text guides used by APP today. "An Time Companion" pays attention to the spiritual needs of the elderly. Unlike most medical assistant APP, which only focuses on health, it provides a series of accompanying services. Cartoon-style virtual images "Xiao 'an" and "hour" run through the whole APP, providing guidance services, intelligent dialogue, singing and performing, voice assistance and life guidance. The addition of interesting sections such as interactive videos and popular science games to guide drug purchase has further enhanced the unique accompanying effect of "An Time Companion. "An Time Companion" APP is mainly divided into three parts: scanning code and knowing medicine, my medicine box and medicine assistant. Its main functions are as follows: ① Registration and Login and Novice Tutorial-Users can register/log in by entering their user name and password. After logging in, they can enter the Novice Tutorial section to guide users to be familiar with the use of APP. Scan the code to identify drugs-scan the drug traceability code with the mobile phone camera to query the drug production batch information and timely feedback whether the drug is expired, and automatically add it to the expired drug and medication reminder section accordingly. ③ My medicine cabinet: store the information of the swept medicine. The "medication reminder" module can scan the code to add or manually add personalized medication reminders, and will automatically jump to the video reminding to take medicine at the preset time, allowing personalized adjustment while being intelligent, convenient and automated. Visualized drug character selection helps the elderly remember drugs. The "Expired Drugs" function reminds users of which drugs have expired in time. ④ "Anshi" Accompanying-The virtual character uses real dubbing, from the interactive guidance tutorial after the first login, to the alarm clock animation reminding to take medicine, to interactive video and popular science games, throughout the entire app. The virtual character feature plate can be called up by pulling down any interface. The audience can choose pink "Xiao 'an" or blue "hour" to have interactive dialogue through voice, perform opera animation or jump to the corresponding interface. ⑤ Drug Assistant-"Looking for Drugs for Diseases" provides a large amount of drug information, with visual body parts and text titles to choose two ways to find drugs. "Popular Science on Buying Drugs" gives guidance on buying drugs according to the actual situation of users' choice in the form of interactive video, aiming at helping the elderly to buy suitable drugs accurately and practically. The "quiz game" aims to popularize science and entertain. Users can choose suitable food or medicine in life-oriented cases, and can get real-time feedback and suggestions. In addition, sections such as popular medicine, drug taboos, common medicine boxes for children and common medicine boxes for pregnancy and lactation have been added, which are universal and not limited to middle-aged and elderly groups, and are convenient for ordinary users to find drugs for common diseases. ⑥ My Favorites-Users can collect some video guides according to their preferences. "Disease science popularization" and "frequently asked questions and answers" are different from the general text form, with pictures and texts. ⑦ Medical record book-take photos to store cases, or manually add information and connect to the medication reminder module to facilitate recording medical history and following relevant doctor's orders.