The invention relates to an inverted-L-shaped deep-well rescue machine and a method. The technical scheme includes that the inverted-L-shaped deep-well rescue machine comprises operating rods and a telescopic rescue machine body; the operating rods are movably connected with the telescopic rescue machine body to carry out deep-well operation, the telescopic rescue machine body comprises a hollow support, an elastic steel strip, a limit steel wire rope, a rescue folding hook, a hook locking sleeve, an elastic clamp hook, a compression spring, a rope opener, a rescue folding hook stay, a rope opener control rope, a ring and a main support pipe, and a pipe orifice connector is arranged on the upper portion of the main support pipe. The inverted-L-shaped deep-well rescue machine and the method have the advantages that the waist of a trapped person can be tied up within a short time, the rescue folding hook can be hung on the buttocks of the trapped person, the trapped person can be lifted to a wellhead by rescue three-legged frames and hand winches, accordingly, the inverted-L-shaped deep-well rescue machine and the method are short in rescue time, and the rescue time can be shortened; the trapped person can be firmly tied up, and accordingly the life safety of the trapped person can be greatly guaranteed; the elastic steel strip which is of an L-shaped structure is exactly matched with structures formed by a transverse support rod and the hollow support, and accordingly spaces occupied by devices can be reduced.