As the end of the whole distribution network, low voltage power grid still has many deficiencies and problems that need to be further strengthened and solved. In the planning and design of low voltage power grid, offset to the distribution transformer (load center), power supply distance, tortuosity coefficient of path, terminal voltage drop, length of single-phase power supply line, length/ section of meter backline, etc. are all indicators to be considered. Moreover, we should not only ensure scientificity and rationality of the low voltage power grid construction design scheme, but also apply informatization means and intelligent software to improve accuracy of design and efficiency of construction.