An Uninterrupted Power Supply managing system for managing a plurality of UPS devices connected to power supply routes between wall sockets and load devices (2, 3, 4, 5), characterised by comprising: a plurality of lower controllers corresponding to each of said UPS devices or each of one or more groups comprising at least two of said UPS devices; a communication network (6, 7) for connecting a plurality of said lower controllers with each other; and a higher controller connected to said communication network (6, 7), wherein each of said lower controllers is configured to generate connection information between each of its corresponding UPS device(s) and each of said load device(s) (2, 3, 4, 5) which is powered by said corresponding UPS device(s), and to transmit said connection information to said higher controller, and wherein said higher controller is configured to receive and store said connection information from each of said lower controllers, and to generate and display a connection tree (69, 95) which is generated from the stored connection information; whereby each of said lower controllers has registered therein destination information of said higher controller in said communication network (6, 7) as a transmitting destination, and is configured to transmit all of said connection information in a communication to said transmitting destination; and said higher controller is configured to receive and store all of said connection information in each of said communication with link information which is unique at least within a plurality of said lower controllers, to store a link list of said link information, to generate said connection tree (69, 95) firstly by classifying each of said UPS devices on said link information and said link list and secondly by classifying each of said load devices (2, 3, 4, 5) on said connection information, and to display said connection tree (69, 95). a plurality of lower controllers corresponding to each of said UPS devices or each of one or more groups comprising at least two of said UPS devices; a communication network (6, 7) for connecting a plurality of said lower controllers with each other; and a higher controller connected to said communication network (6, 7), wherein each of said lower controllers is configured to generate connection information between each of its corresponding UPS device(s) and each of said load device(s) (2, 3, 4, 5) which is powered by said corresponding UPS device(s), and to transmit said connection information to said higher controller, and wherein said higher controller is configured to receive and store said connection information from each of said lower controllers, and to generate and display a connection tree (69, 95) which is generated from the stored connection information; whereby each of said lower controllers has registered therein destination information of said higher controller in said communication network (6, 7) as a transmitting destination, and is configured to transmit all of said connection information in a communication to said transmitting destination; and said higher controller is configured to receive and store all of said connection information in each of said communication with link information which is unique at least within a plurality of said lower controllers, to store a link list of said link information, to generate said connection tree (69, 95) firstly by classifying each of said UPS devices on said link information and said link list and secondly by classifying each of said load devices (2, 3, 4, 5) on said connection information, and to display said connection tree (69, 95).