Abstract: Abstract: Aiming at the problem of increasing anchor failure rate of high ground temperature and high ground pressure anchorage support in deep soft rock roadway, taking deep soft rock roadway in Huainan mining area as an example, the indoor similar simulation test method was used to study the deformation and failure characteristics of anchor solid and the stress characteristics of anchor under the coupling effect of temperature and pressure. The results show that with the increase of temperature and lateral pressure coefficient, the fracture depth of anchorage body increases, while the increase of lateral pressure coefficient decreases the fracture angle of anchorage body. When λ = 1.2, 1.5 and 1.8, the fracture depth of the anchorage body is 1.02～1.2, 1.13～2.2 and 1.15～2.4 times of the tray diameter, and the fracture dip angles of the anchorage body are 45°～60°, 40°～45° and 30°～35°, respectively. With the increase of temperature and lateral pressure coefficient, the horizontal deformation of the anchorage increases in the compaction stage. With the increase of lateral pressure coefficient, the influence of temperature on the deformation and failure of the anchorage is weakened. The bolt is in the complex stress state of compression, tension and shear under the action of broken blocks. The bolt is mainly subjected to tension stress, and the bending position is compressed and shear stress. With the increase of temperature and lateral pressure coefficient, the bending position of the bolt is compressed and the shear stress increases, and the bolt has obvious bending deformation. Bolt anchor solid progressive failure. The full-length anchoring support technology is applied to the optimization design of the surrounding rock support parameters of the main roadway of the Western Third Railway, and the field monitoring is carried out. The feedback shows that the surrounding rock support effect of the roadway is good.