Ag doped La2/3Ca1/3MnO3 (LCMO∶Agx) polycrystalline pellets, which are prepared by solid-state reaction, are employed to fabricate LCMO∶Agx epilayer on single crystalline LaAlO3(100) substrate by pulsed laser deposition technique. X-ray diffraction (XRD) and ω-θ rocking cure analysis show that all the films are c-oriented and presented good crystalline quality. The morphology of the as-grown films are detected by atomic force microscope (AFM), and the results demonstrate that the surface roughness increases with increased Ag doping level, further, numerous laser droplets could be observed in all films. Laser induced voltage (LIV) effect is found in those films grown on the vicinal-cut LaAlO3(100) substrates, and with Ag content increasing, the peak value of LIV signal (Up) increases firstly and arrives to its maximum at x=0.05. Up decreases up to x=0.10 and gets its minimum at x=0.10, while Ag content dependence of response time τ of LIV signal just presents an opposite behavior.