Disclosed are a hydrogen energy production system utilizing silicon wastewater and a method for production of hydrogen energy using the same. More particularly, the disclosed system includes: a UF treatment bath wherein the silicon wastewater is treated through UF film filtration to separate UF treated water and a concentrated silicon waste solution therefrom; a line mixer connected to the UF treatment bath in order to admix the separated silicon waste solution with an alkaline material fed from the outside; and a hydrogen production bath connected to the line mixer, wherein the concentrated silicon waste solution in the mixture reacts with the alkaline material, in order to produce hydrogen gas. Additionally, a hydrogen energy production method using the foregoing system is also disclosed.