The invention relates to a horizontal airplane measurement system and method. The system comprises: a control display, which is used for constructing a horizontal airplane measurement model, correcting horizontal airplane measurement parameters, remotely controlling a laser distance measurement sensor, and displaying the horizontal airplane measurement parameters; a plurality of groups of horizontally fixed laser distance measuring sensors, which are used for horizontal adjustment and parameter measurement of the airplane; mobile laser distance measuring sensors, which is used for measuring parameters of other measuring points on the airplane; and an electric lifting assembly, which is used for jacking the airplane to realize horizontal adjustment of the airplane, wherein the control display is in communication connection with the multiple groups of horizontally-fixed laser distance measuring sensors, the electric lifting assembly and the movable laser distance measuring sensors. Through the system and the method, the horizontal measurement of the airplane can be completed; measurement operation is simple, convenient and rapid; measurement efficiency and accuracy are high; and thesystem is rapid to install and measure, labor intensity is low, measurement time is short, and the technical blank of special equipment for horizontal measurement of the airplane is filled.