It needs to reduce the daily variation (diurnal) in the twoway satellite time and frequency transfer (TWSTFT) and explore the reasons. Using the redundancy of the current AsiaEurope international twoway time comparison network via ABS2A satellite, TWSTFT links of different baseline lengths at different periods are selected. Firstly, the satellite time and ranging equipment (SATRE) TWSTFT results with the softwaredefined radio (SDR) receivers TWSTFT results are compared. Then, with different laboratories in Asia and Europe as a relaying laboratory, the results of SATRE TWSTFT direct and indirect links are compared. Finally, the GPS precise point positioning (PPP) time comparison, which is independent of TWSTFT, is used as a reference to evaluate the performance of the aforementioned results. Experimental results show that the average gain factor of SDR TWSTFT for AsiaEurope and Asia SATRE TWSTFT time deviation (TDEV) is around 175. For the baseline of National Time Service Center (NTSC) and National Institute of Metrology (NIM), the gain factor of TDEV is 122 for the indirect link via PhysikalischTechnische Bundesanstalt (PTB).