Trunk sampling device for investigation of tree diseases and insect pests

The utility model provides a trunk sampling device for investigating tree diseases and insect pests, which relates to the field of tree sampling devices, and comprises a sampling body, three bearings are embedded in the front surface of the sampling body, the bearings are fixedly connected with the surface of the sampling body, sampling pipes penetrate through the centers of the three bearings, and the sampling pipes are fixedly connected with the bearings. A sampling drill bit is arranged at the end part of the sampling pipe and is in threaded connection with the sampling pipe. The three sampling pipes are installed in the sampling body at equal intervals, three positions of a tree can be sampled at the same time, the sampling pipes are driven by the motor, manual cutting is not needed, the automation degree is high, the sampling efficiency is improved, and meanwhile the detection precision is improved through the three sampling points. After drilling, the sampling body is slightly inclined, and the sampled