Small portable cable physical nuclear phase tester

The utility model discloses a small portable cable physical nuclear phase tester which comprises a shell, an integrated circuit board, a color display screen and a lithium battery, the integrated circuit board is installed on the bottom surface of an inner cavity of the shell, and a single chip microcomputer is arranged on the integrated circuit board. A mode change-over switch, a plurality of state display lamps, a power switch, a charging socket and a plurality of test interfaces which are all electrically connected with the single chip microcomputer are welded; the color display screen is mounted on the top surface of the inner cavity of the shell; the lithium battery is installed on the bottom face of the inner cavity of the shell. According to the utility model, the shell is divided, the disassembly and assembly of the shell are facilitated, the circuit board can be rapidly and stably installed through the arranged installation groove, and meanwhile, the plastic protective sleeve is sleeved outside to pl