The invention discloses a work suit for work in a well. The work suit includes a reflection module, a wire is electrically connected with the two ends of the reflection module, the right side of the wire is provided with a button, and a cuff is closely connected with the end portion of the button; the inner layer is fixedly connected with the inside of the cuff, the bottom of the inner layer is connected with an inner-layer interlayer, the bottom of the reflection module is provided with a first sprocket, and one end of the first sprocket is movably connected with a zipper puller, a gear of asecond sprocket and a gear of the first sprocket are matched in shape, the second sprocket is arranged on the lower portion of the zipper puller, a base band surrounds the periphery of the bottom of the second sprocket, and the second sprocket is electrically connected with the right side of the surface of the base band; the outer surface of the reflection module is fixedly provided with a waterproof layer, and a chest pocket is arranged on the upper portion of the reflection module.