The Self-locking sleeve joint is a new type of rib-stripped rolled straight thread joint. Its process principle is to clamp the threaded heads of the two steel bars to be connected with two semicircular threaded sleeves. The thread heads are closely engaged with the semicircular sleeve threads, and then the two semicircular sleeves and the steel wire heads are clamped by the locking sleeve to connect them into one to achieve the connection effect. The application of rebar sleeves can be seen in many construction sites and building sites. Among them, the split rebar sleeve is a new type of connection method encountered in the construction process. Connecting multiple steel bar components is very important in the construction process. It is suitable for connecting cast-in-place piles and connecting sleeves between walls and boards.