Metalens has gained research interest in the field of nanophotonics. Contrary to the traditional metalens composed of high refractive index dielectric material such as TiO2, Si, or GaN, the authors propose a Pancharatnam-Berry (PB )Phase-type metalens. All the numerical simulations of the designed structure were performed through finite-difference time-domain software (FDTD Solutions). The simulation results validate that the peak focusing efficiency of the photoresist metalens in the visible light band i.e. 500~700nm is 58% while in the near-infrared band i.e. 700~900nm, the peak focusing efficiency is 52%. The results validate that the metalens made of non-high refractive index materials can also achieve better-focusing performance. It overcome the limitations of designing and processing metalens based on high-cost electron beam etching methods and is a great future for metalens. The applications of the metalens expand a broader space for development.