The promotion effect of urban forests on human health has been widely confirmed.The hospital is one of the areas with a congregation large number of people who have the most urgent need for ecological health.It is important to strengthen the research on the current situation and construction potential of urban forest in hospitals. This paper analysed the Urban Tree Canopy and urban forest structure of hospitals in urban areas of Beijing. Analysis was based on World View 2 remote sensing images with a resolution of 0.5m from July to September 2013, and the tree canopy cover grid and vector map of Beijing urban areas in 2013 obtained from the object-oriented interpretation platform eCognition software and combined with field investigations. The results showed that the Existing Urban Tree Canopy (EUTC) of the hospital was 18.59%, and Possible Urban Tree Canopy (PUTC) was 1.55%. Both EUTC and PUTC values were higher in tertiary hospitals than second-class hospitals. The EUTC of each ring road was 1km out from the 5th-6th Ring Roads (19.15%) > 3rd-4th Ring Roads (13.03%) > 2nd-3rd Ring Roads (11.64%) > 4th-5th Ring Roads (11.18%) > Within the 2nd Ring Road (8.16%). The PUTC was 1 km out from the 5th-6th Ring Roads (0.03%) > 4th-5th Ring Roads (0.01%) and all the other rings were 0. The EUTC of six administrative regions was Shijingshan District (24.49%) > Haidian District(21.67%) > Chaoyang District (20.11%) > Fengtai District (19.43%) > Xicheng District (13.52%) > Dongcheng District (10.55%). The PUTC of all administrative districts were almost 0. There were 62 species of plants recorded in this study, which belong to 33 families and 54 genera.Among them, the most important species based on Important value and Frequencies for trees were Cedrus deodara, Magnolia liliiflora, Ginkgo biloba and for shrubs were Amygdalus triloba, Punica granatum, Lonicera maackii. The average density of urban forests in the hospital was 55 plants per hectare, and 2.23 m²/hm². The average diameter at breast height(DBH), crown width and tree height were 17.69cm, 4.65m, and 6.60m, respectively. The overall size of the tree species is small.