The effect of Ag doping concentration on the microstructure, transport properties and weak-link profile of YBa 2 Cu 32x -Ag x O 72d bulk superconducting compound was investigated through resistance -temperature ðR-TÞ; ac magnetic susceptibility ðx 2 TÞ; scanning electron microscope (SEM), X-ray diffraction (XRD) and the critical current density ðJ c Þ versus applied magnetic field ðJ c 2 BÞ measurements. We used the additive method with cationic ratio of x ¼ 0:1 2 0:4 for the YBCO-Ag system. The change in the silver doping concentration slightly affected the transition temperatures ðT c;zero Þ; whereas, the critical current densities ðJ c Þ of the samples and their magnetic field ðBÞ dependencies were noticeably affected. The improvement on the microstructural properties of YBCO bulk superconductors was observed in SEM analysis, the J c values increased and their magnetic field dependencies decreased with the increasing of Ag concentration up to x ¼ 0:2: As well as the current transport properties. Ag doping up to a certain amount produces texturing that gives rise to a modification in the weak-link profile resulting in an enhanced strength of flux pinning which causes an increase in the current carrying capacity. q