The invention discloses a V-cone flowmeter with bionic microstructures on the surface. The flowmeter comprises a pipe, a V-shaped cone, a supporting rod and a low-pressure tapping pipe. The V-shaped cone is fixed to the interior of the pipe through the supporting rod, multiple microstructures are arranged on the surface of the V-shaped cone, and a high-pressure tapping pipe and a restoration pressure tapping pipe are further arranged on the pipe; the high-pressure tapping pipe is located on the upstream of the V-shaped cone, the restoration pressure tapping pipe is located on the downstream ofthe V-shaped cone, and the low-pressure tapping pipe is located between the high-pressure tapping pipe and the restoration pressure tapping pipe; the low-pressure tapping pipe penetrates through thesupporting rod and is communicated with the low-pressure tapping face of the top point of a rear cone body of the V-shaped cone in sequence. One or two or more kinds of bionic microstructures such asribs, grooves, bosses and pits are distributed on the surface of the V-shaped cone, parameters such as the ratio of width to height, spacing, number and distribution modes of the microstructures are reasonably set, optimal structure parameters of the microstructures on the surface are obtained, and finally the resistance reduction aim is achieved.