Detection ruler for constructional engineering project management

The utility model discloses a detection ruler for constructional engineering project management. The detection ruler comprises an installation base. A groove is formed in the top end of the mounting base, a plurality of lamp beads are fixedly mounted on the bottom side of the interior of the groove at equal intervals, and a ruler body a and a ruler body b are fixedly mounted on the top side and the bottom side of the mounting base correspondingly; the ruler body a and the ruler body b are both provided with scales, the color of the outer side of the ruler body b is white, the color of the scales on the ruler body b is black, the color of the outer side of the ruler body a is black, and the color of the scales on the ruler body a is transparent. According to the utility model, the pluralityof lamp beads are arranged; according to the multifunctional ruler, the plurality of lamp beads can be conveniently started to emit light under the condition of insufficient light, and the light is transmitted out through th