Absolute ground-based gravity measurement holds significant applications in various fields such as fundamental science, geological hazard early warning, and national defense security. At present, common terrestrial absolute gravity measurement methods mainly include indoor static measurement, outdoor mobile measurement, and vehicle-mounted static-base measurement, which struggle to balance mobility and measurement accuracy. To overcome the aforementioned issues, a novel vehicle-mounted dynamic-base atomic interferometric absolute gravimeter is proposed. Through the optimized design of the laser system and control system, it enables one-key startup, significantly enhancing the level of system integration and automation. During measurement, the sensor head is rigidly attached to the moving base and coupled to the ground via a support structure, effectively suppressing the impact of carrier vibrations on measurements. In indoor environments, the system achieves a measurement sensitivity of approximately 147 μGal/Hz, with a measurement resolution better than 1 μGal at an integration time of 40 000 seconds. Continuous flow gravity measurement experiments across typical multi-scenario environments are implemented in urban and mountainous field environments, demonstrating stable system operation. Under field fast measurement conditions, the sensitivity is approximately 173 μGal/Hz, which is relatively close to the performance achieved in indoor environments, indicating good robustness. The vehicle-mounted system can be rapidly mobilized to designated points and deployed, obtaining high-precision gravity data within 10 minutes. The test routes covered various typical field terrains, including urban buildings, urban roads, mountainous roads, and mountainous open areas. Test results show that, in complex field environments with altitude changes exceeding 1.6 km and temperature variations of approximately 7.6℃, the gravity measurement residuals are better than 100 μGal, demonstrating excellent system stability. The proposed vehicle-mounted gravimeter achieves high-precision fast measurement under long-distance mobility conditions across diverse field terrains. It exhibits significant application potential in areas such as the fast establishment of gravity reference networks, rapid acquisition of short-wavelength gravity field information, and natural disaster forecasting under field conditions.