The fabrication and measurement of isentropic release targets were described. The Al，Au，Ag、Cu and Zn thin foils were cut to hundred micron by apparatus of laser. They are fabricated to isentropic release targets using in the laser equation of state experiments by the assembly. The parameters of targets were measured by NT1100 profiling system. The isentropic release targets were used in "SG II" experiments and good images were obtained.