Carrier on-site tester

The present invention discloses a carrier on-site tester. The tester comprises housing, and a printed circuit board is arranged in the housing; a button zone is arranged at the right side of the housing, a plurality of control buttons are uniformly arranged at the button zone; a display screen is arranged at the housing at the upper portion of the button zone, a plurality of interaction interfaces interacting with the outside are arranged at the left side of the housing, and a R2S32 interface and a power supply interface are arranged at the lower portion of the housing; a connection slot externally connected with the carrier is arranged at the back of the housing, a lithium battery is arranged at the back of the housing at the lower portion of the connection slot, and the lithium battery is in line connection with the power supply interface; and a plurality of control buttons, the display screen, a R2S32 interface, a power supply interface are in line connection with the printed circuit board. The carrier on-