In this study, an environmental acrylonitrile butadiene styrene (ABS) resin was combined with three-dimensional (3D) printing technology to develop a new pressure sensor body with the molding pressure for fiber Bragg grating (FBG) sensor technology embedded in the sensor body. The production of the new pressure sensor was completed in a hydrostatic tank, and by increasing or decreasing the pressure to simulate different FBG wavelength changes, the accuracy could be tested via finite element analysis of the experimental results. The 3D printing technology has made this process simple and has the advantages of rich variability and low cost. From the experimental results for pressure loadings of 0–4 bars, it was determined that this new FBG pressure sensor with a cylindrical configuration had a wavelength strength variation of 0.828 nm and a sensitivity of 0.208 nm/bar. The FBG pressure sensor with a cylindrical configuration has good linearity and reproducibility between wavelength deviation and repeat water pressure loading/unloading according to the results of a numerical analysis.