The utility model relates to an engineering ladder with adjustable height, including first ladder, second ladder, the lower extreme of first ladder is connected with the backup pad, the lower extreme of backup pad is equipped with a plurality of antiskid tooth on the surface, second ladder lower extreme is connected with the walking wheel, be equipped with the regulation pole between first ladder, the second ladder, be equipped with L type bracing piece on first ladder, second ladder upper end junction one side, the L type upper end of the support bar be connected with the tool shelf. The utility model discloses can the first ladder of automatically regulated, the interval has realized the altitude mixture control between the second ladder, avoided the staff need about the ladder high trouble of bringing of adjusting the ladder repeatedly, through setting up the tool shelf, the workman can place the instrument of using in the tool shelf like this, the ladder instrument of taking about having avoided relapseing, and intensity of labour is little like this, and work efficiency is high, and the practicality is good.