Green synthesis reduces the production of deleterious productsthrough sustainable and eco-friendly synthesis proceduresby using natural resources such as greenmaterials. The presentwork reports the green synthesis of metal nanoparticles tominimise waste products and implement sustainable processes.Environmental sustainability will increase the healthy environmentby reducing hazardous products to the environment.The research community attracts green plants and their productsfor materials production due to their nontoxic nature tothe environment and human health. The current report isnew experimentation for nanoparticles by use of green materialswith biological reduction method. Silver and gold nanoparticleswere synthesized by use of Butea monosperma plantleaves extract. Potential applications of the green derivednanoparticles are known for biological applications and environmentalremediation is discussed. The mechanisms of thebiological activity of the nanoparticles are also reported.