Terahertz　(THz)　waves　are　electromagnetic　waves　between　microwave　and　infrared　with　low　energy,　water　absorption,　high　penetration,　and　other　important　characteristics.　The　frequency　range　of　THz　waves　is　between　0.1　~　10　THz.　With　the　development　of　THz　sources　and　detectors,　the　imaging　technology　in　the　THz　band　has　also　been　greatly　developed.　THz　confocal　imaging　technology　is　performed　by　scanning　the　sample　layer-by-layer.　In　which,　the　combination　of　pinhole　and　point　light　source　can　filter　out　the　stray　beam　from　the　defocusing　plane　and　improve　the　axial　resolution.　The　super-oscillation　is　a　phenomenon　in　which　the　band-limited　function　can　oscillate　faster　than　the　highest　Fourier　component.　A　super-oscillating　lens　based　on　such　method　can　generate　a　focal　spot　beyond　the　diffraction　limit　at　any　position　through　complex　interference,　which　is　called　terahertz　super-oscillating　lens　(TSOL).　In　this　paper,　we　present　a　phase-type　Fibonacci　TSOL,　which　can　obtain　a　short　focal　depth　and　narrow　spot　diameter.　The　Fibonacci　lens　is　a　diffractive　lens　that　produces　multiple　foci　along　the　axial　coordinate.　Its　focal　depth　and　focal　spot　at　around　0.3　THz　are　investigated　by　simulation　and　experiments.　A　THz　confocal　system　based　on　Fibonacci　TSOL　is　built,　and　the　confocal　imaging　of　3D　printed　samples　is　studied.　The　lateral　and　axial　resolution　of　the　system　is　higher　than　the　traditional　THz　confocal　microscope　using　a　single　lens.　©　2023　SPIE.