A distributed type timing system is provided, which is characterized in that a tree-shaped signal network is set and the distributed nodes are correspondingly set according to different physical locations of distributed subsystems. A core module provides for each distributed subsystem a plurality of synchronous square wave system clocks and synchronous system pulse trigger signals through the distributed nodes. A local operation network is set; each distribution type node and a console are together connected into the Ethernet. One route of the console provides the core module with system trigger pulse electric signal through a cable; the other route sets each clock on each distributed node and an output channel through the Ethernet to realize the transmission of the control command and the parameter. The invention provides accurately synchronous square wave clock signals and accurate pulse trigger time sequence for large devices which have a distributed system structure with simple and reliable system setting.