The performance of connections has a significant importance in a steel structure. Designing and executing of connections without adequate accuracy can cause failure not only on the connection but even on the connection members. As a result this may have destructive effects on the whole structure. So an accurate perception of connection behavior is necessary for a safe and economical design. In this paper, static and seismic behavior of recommended splice Iran National Code is examined and contrast with behavior common splices. With finite element software, static and seismic behavior three types of splices including bearing, covering with filler plate and covering with section transfer and the collapse performance, the way of connection fracture, cyclic and static resistance of connected column are considered in this paper. The results of investigation show that recommended column splice mentioned in the 10th, has the most Focus stress of transfer part and low resistance than spliced column with filler plate and covering plate. The collapse performance of examined columns is of local buckling in transfer plate or other part of columns.