Anti-resonant hollow-core photonic crystal fibers (HC-PCF) have important application in middle-infrared fiber gas lasers. The low-loss coupling between HC-PCF and solid-core fiber is a key technology to realize all-fiber structure fiber gas lasers. A scheme of inserting tapered solid-core fibers into hollow-core fibers is proposed and studied. Theoretical and experimental results show that the low-loss coupling between solid-core fiber and anti-resonant HC-PCF with large mode field diameter is realized when we use optical fiber taping technology to change the diameter of ordinary fiber mode field and make the mode field diameter of the tapered fiber approximately match that of the hollow-core fiber. For the ice-cream type anti-resonant HC-PCF with mode field diameter of about 35 μm, the simulation results indicate that when the waist diameters of tapered fibers are around 30-50 μm, the coupling efficiency is over 95% and the maximum coupling efficiency can reach to 98%. In the experiment, the coupling efficiency is 96.05% when the waist diameter of tapered fibers is 35 μm. This conclusion provides a feasible technical approach for the low-loss coupling between anti-resonant HC-PCF with large mode field diameter and solid-core-fiber and the realization of all-fiber structure gas lasers.