Magnesium chloride doped L-alanine acetate (MCLAA) crystals have grown by solution method with by slow evaporation technique. Solubility of the sample is found to be increasing with increase in temperature. Structural analysis was carried out by XRD method and the crystal of MCLAA is observed to be crystallizing in orthorhombic structure. The functional groups of the samples have been identified by FTIR spectral studies. The optical transmission studies were carried out to determine the transmittance and optical band gap. EDAX analysis was done to identify elements present in the magnesium chloride doped L-alanine acetate crystals. The second harmonic generation efficiency was measured by Kurtz-Perry powder technique. Microhardness was measured at different applied load to understand the mechanical stability of the sample. Dielectric constant and dielectric loss of the samples were measured at different frequencies. Thermal studies were carried out to test the thermal stability of MCLAA crystal. Photoluminescence light was measured at different wavelengths for the grown crystal.