The invention discloses a dynamic modeling method of object units of network distribution equipment. The dynamic modeling method is characterized by comprising the following steps: (1) establishing an attribute table of the power distribution equipment, (2) establishing a three-dimensional (3D) appearance model of the equipment in a 3D modular application executive (MAX) according to actual sizes of the power distribution network by means of 3D modeling technology, and setting an expanded attribute for each equipment according to actual operation condition of the equipment to record an unique identification of the equipment, (3) establishing one-to-one correspondence relationship between the 3D appearance model of the equipment and the attribute table according to the unique identification, and (4) loading the 3D appearance model of the equipment into a Quest 3D software, and assigning relevant contents in the attribute table. Finally, a 3D model of the equipment is established. According to the dynamic modeling method of the network distribution equipment, relevant parameters in the attribute table are assigned, state of the 3D model of the network distribution equipment can be changed in real-time and dynamically, not only is work simplified, but also efficiency is improved.