Objective: To analyze the literatures related to informal caregivers in China by visual analysis software, and to explore the hot spots and frontiers of researches the field of informal caregivers . Methods: The three major Chinese databases including CNKI, WanFang, and VIP were used as data sources for searching all literatures related to informal caregivers since the establishment of the databases. The number of literature, authors, institutions, and keywords were analyzed visually. Results: After de-duplication and exclusion of irrelevant studies, a total of 4 642 literatures were included for visualization and analysis. The number of articles steadily increased and showed four main stages. The author with the largest number of publications was ZHANG Zhenxiang， and the institution with the largest number of publications was Fudan University. To summarize, the main populations studied in this area were the elderly, children and caregivers of people with certain chronic diseases, meanwhile, the hot research topics included assessment and intervention of care burden, assessment and enhancement of competence of informal caregivers. Conclusion: With the change of social structure, the demand for informal caregivers in society is gradually increasing, the problem of caregiver burden is serious, and the problem of caregiver capacity enhancement is prominent, which also attracts more and more scholars to invest in researches in this field. However, the connection between different scholars and institutions is not enough. It is necessary to prompt authoritative institutions to take the lead in future research, actively seek cooperation, achieve resource sharing, conduct multicentre and large sample studies, so as to construct scientific and effective assessment and intervention plans.