LAN interface cable tester with measuring tape

The invention relates to the field of cable tester, and specifically relates to an LAN interface cable tester with a measuring tape. The LAN interface cable tester with a measuring tape comprises a main tester and an auxiliary tester, wherein a main RJ45 slot is arranged in one end of the main tester; an auxiliary RJ45 slot is arranged in one end of the auxiliary tester; the other end of the main tester is provided with a built-in steel measuring tape box; a self-coiling steel belt-shaped measuring tape is arranged in the steel measuring tape box; and a tooth hook of the steel belt-shaped measuring tape is arranged on the other outside surface of the main tester. The LAN interface cable tester is also provided with the function for measuring the length of a network cable; the tooth hook is arranged at one end, being far away from the main RJ45 slot, of the main tester, and is concealed in the main tester usually so that normal use of the cable tester is not influenced; when the length of a network cable is required to measure, the measurement can be realized only by pulling out the tooth hook to operate; and the devices which should be carried for maintenance and inspection for a room maintenance staff can be simplified so that the LAN interface cable tester is convenient and quick.