According to the SULTAN test result on CS conductor,that prove a short twist pitch cable pattern can cure the problem of degradation vs cycling for both type of strand,internal-Sn and bronze.But the short twist could cause the strand strain when cabling; the strain caused by cabling could influence the critical current performance of the strand.We would do the research on test the critical current performance of internal-Sn Nb3Sn strand made by WST under the different compress load at room temperature.