For the challenges in the ground-based indoor field test and verification of the entire process of high-precision measurement and localization of time difference of arrival(TDOA) and frequency difference of arrival (FDOA) by multi-observation station formations in dynamic scenarios, a semi-physical testing method for multi-observation station localization system of TDOA and FDOA is proposed. The multi-stations localization system of TDOA and FDOA works collaboratively with dynamic scene simulators, agile signal generators, atomic clocks, system calibrations and other auxiliary equipments under a unifield time-frequency reference and control instructions, achieving a full-scale realistic simulation and test verification of the TDOA and FDOA variability environment and inter-statation time synchronization and frequency phase consistency constraints faced by the implemented multi-station system. The test result show that the TDOA measurement accuracy is better than 10 ns(r.m.s), the FDOA measurement accuracy is better than 1 Hz(r.m.s), and within a range of 900 km from the radiation source to the observation stations,the localization CEP accuracy is better than 100 meters. Compared with traditional field implemention tests, the test time cost is reduced by approximately 80%, and the test cost is reduced by approximately 70%, thereby greately improving the system testing efficiency and coverage, and releasing the techincal and engineering risks of the multi-station formation collaborative localization system in the ground indoor field measurement environment.