Municipal engineering topographic surveying and mapping auxiliary equipment

The utility model discloses municipal engineering topographic surveying and mapping auxiliary equipment which comprises a first supporting leg, an observation device is arranged on the upper surface of the first supporting leg, a second supporting leg is arranged in the first supporting leg, and a steel wire is fixedly connected to the side surface of the second supporting leg. The ends, away from the second supporting legs, of the steel wires are fixedly connected with adjusting devices. According to the utility model, by designing the adjusting device, the detection device can be automatically kept vertical to the gravity without being adjusted by personnel in the use process of the device, the use convenience of the device is increased, and by designing the observation device, the detection device can be automatically observed in the use process. Whether the second supporting leg is changed or not can be judged by observing the distance between the sliding disc and the hard circular ring, the use convenien