Point fixing device for land survey

The utility model discloses a point fixing device for land survey, which relates to the technical field of land survey and comprises a bottom plate and a mounting frame fixedly connected onto the bottom plate, an auxiliary mounting unit for auxiliary mounting is arranged on the bottom plate, and an automatic adjusting unit for automatically adjusting a fixed point observation point is arranged on the auxiliary mounting unit. When the device is used, firstly, the auxiliary installation unit is used for carrying out auxiliary fixed-point installation identification, the practicability is improved, then the automatic adjustment unit is used for automatically adjusting the identification, the later land measurement work is facilitated, the practicability is high, an existing positioning mode is replaced through the arrangement of the auxiliary installation unit, the cost output is low, and the practicability is high. Through the arrangement of the automatic adjusting unit, after the mark is installed, self-adjust