The utility model discloses a connecting device between rich cement matter tunnel stock of wind oxidation, connecting device includes bolt bayonet socket, real core rod and sleeve, wherein: telescopic middle part is equipped with the slip casting mouth, telescopic both ends respectively with real core rod's a end screw thread connection, real core rod's the other end and bolt bayonet socket link firmly. Above -mentioned connecting device aggregate erection is between two stocks, and the bolt bayonet socket blocks stock tip bolt. Enclose the rock anchor pole with current tunnel and strut and compare, the device simple structure, transportation simple to operate, it is convenient to be under construction, and the material resources of using manpower sparingly are with low costs, after the installation finished, whole ring of structrual joint became the carrier ring physique, supported the ability reinforce, bore the weight of the dynamic height, and ductility is good, the large deformation of control wind oxidation weakness broken surrounding rock. The device not only can strengthen the transverse connection effect between stock and the stock, plays horizontal strong muscle solid effect, and the bearing capacity that struts of every stock is exert better to tip bolt that moreover can single stock of chucking.