In order to improve the anti-impact mechanical properties of column,a kind of constant resistance giving way and anti-impact device of mining column is designed.The device is composed of a joint,clamp,energy absorption component cover,energy absorption component and pin.According to the Chinese standard of column,the bearing capacity of anti-impact device is determined,and the working and anti-impact principle of the device is given out.The contrastive analysis is conducted to study the deformation and stress of conventional column and the column installing anti-impact device under impact loading.The results show that under the same impact loading,the deformation of anti-impact column is far less than that of conventional column.The energy absorption and anti-impact component can effectively reduce the impact force on column in the deformation stage.The anti-impact device can greatly enhance the anti-impact properties of column,and it can be easily installed on the existing conventional column.And the constant resistance giving way and anti-impact device can be used in the automotive,aerospace industry,highway safety protection and other fields.