Engineering insulation piercing connector construction system

The utility model discloses an engineering insulation piercing connector construction system which comprises an insulation piercing connector (1). The engineering insulation piercing connector construction system is characterized in that through the insulation piercing connector, phase lines (4) of a trunk line (2) and a branch line (3) are connected reliably, zero lines (5) of the trunk line (2) and the branch line (3) are connected reliably, and protection lines (6) of the trunk line (2) and the branch line (3) are connected reliably; and the connection is misplaced. The utility model has the advantages of being convenient and fast in installation, causing no damage to a cable insulation layer and ensuring security and reliability of power supply; being adjustable in installation position, free from space restriction and capable of live working; being less in influence of installation quality by the technical level of construction personnel; and being low in material cost, high in work efficiency and the like.