A miniaturized， high-precision wavelength measurement technology for near-infrared ultra-wideband single-frequency fiber lasers in the 0.8-2.4 μm range is proposed， based on the principle of the Michelson interferometer. The optical components utilized are compatible with the entire near-infrared band （0.8-2.4 μm）. A servo motor translation stage with a maximum stroke of 50 mm， combined with a double-folded optical path design， enables an optical path difference four times the horizontal displacement. Signal acquisition and processing are performed using a high-speed acquisition card and a LabVIEW-based upper computer program， achieving miniaturization， high precision， and rapid measurement. A novel sampling number equivalent resolution method is introduced to simplify the wavelength resolution design process， establishing a direct numerical relationship between wavelength resolution and the number of sampling points， while allowing other parameters to be adjusted independently. Wavelength measurement experiments were conducted on five typical single-frequency lasers （0.8， 1.06， 1.55， 1.94， and 2.05 μm）， and the results were compared with those obtained using a commercial high-precision wavemeter. The experimental results demonstrate the effectiveness of the proposed method， with a single measurement time of 1.5 s， measurement accuracies of ±1.4， ±1.1， ±1.2， ±1.2， and ±1.3 pm， and a wavelength resolution consistent with the theoretical value of 0.2×10^-6. These findings validate the capability of this miniaturized technology to perform high-precision， rapid measurements across the full 0.8-2.4 μm near-infrared spectrum.