The invention is a electron laser target for tunnel developing guiding system, which belongs to orientation measuring device, it can be applied to mine, hydraulic tunnel, subway tunnel, municipal pipes, common canals field, the invention arranges edge glass, flat and convex lens, position sensitive sensor PSD, banking indicator and processing circuit along the axis in the barrel machine box; the light sensitive surface of the position sensitive sensor PSD is at the focus plane of the flat and convex lends and vertical to the flat and convex lends axis, the centre of the light sensitive surface is on the axis; the PSD is connected with the processing circuit electric signal. The invention integrates the ELS and the edge glass into one, thus the volume of the ELS is reduced, the operation is simplified, it uses the infrared of the whole station device directly, it is focused by the convex lends, and is placed at the PSD on the focus plane, then it generates current, which is outputted to the external computer after being processed.