A new type of hollow-core anti-resonant fiber (HC-ARF) with single-mode, broadband and good bending characteristics is proposed for the fabrication feasibility by adding a connecting tube outside the cladding tube of six-tube nested HC-ARF, and the fabrication is completed based on the constructed virtual preparation model. The virtual fabrication model is established on the improved six-tube nested HC-ARF to complete the optimization exploration of the fabrication process and the influence of the control deviation of the fabrication process parameters on the operation characteristics of the fiber is discussed. The fabricated fiber has shown a high-order mode extinction ratio (HOMER) of more than 100 at a wavelength range of 1.40~1.65 μm with a bandwidth of 250 nm, which can maintain single-mode transmission with a total loss of less than 0.2 dB/km, the minimum loss of 0.01 dB/km is at a wavelength of 1.50 μm and the most HOMER is as high as 2 626, the bending loss is less than 0.4 dB/km at a radius of no less than 10 cm. Fabrication analysis results show that the proposed HC-ARF has good broadband single-mode operation characteristics and robustness to the effects of the fabrication process parameters. The results are of great significance for the innovative design of HC-ARF structure and the development of fabrication technology.