Using of Phyto-synthesis silicon Nanoparticles and biochar in the agriculture field has gained more attention at present. The application of silicon nanoparticles and biochar in agriculture has been economically and environmentally beneficial. Silicon nanoparticles and biochar increase soil fertility and improve the growth of crops. This paper reviews the positive effects of the application of both silicon nanoparticles and biochar on the growth of crops and summarizes the prior research on the use of silicon nanoparticles and biochar in agriculture. Phyto-synthesis silicon nanoparticles and biochar are better for the growing of crops. This review paper also revealed the remediation of Cd heavy metal from soil by using the application of silicon nanoparticles and biochar. More research and investigation are needed in the future to understand the better results of the application of silicon nanoparticles and biochar in agriculture.