Pure and thiourea doped single crystals of L-proline cadmium chloride monohydrate were grown by slow evaporation method at room temperature. The SXRD analysis gives the details about the lattice parameters and crystal system. EDAX spectrum corroborated the incorporation of C, H, S, Cd, Cl in doped single crystal. FTIR analysis confirms the presence of various functional groups in the title material. The UV transmittance spectrum confirms the increase in transparency of the doped crystal. The green light emission of the title material was attributed by fluorescence analysis. The mechanical analysis suggests that thiourea doped L-Proline cadmium chloride monohydrate comes under soft material category and the second harmonic efficiency of doped crystal was 0.8 times than KDP.