Pseudo satellite signal transmitter is an important part in the study of satellite navigation, and it has a wide use in engineering positioning applications. AD9361 has high integration and flexible programming of the RF transmitter, the design and implementation of a simple pseudo satellite signal transmitter based on utilizing the advantages of AD9361 has been described in detail in this article. Its radio frequency can be adjusted from 70MHz to 6.0GHz, which can meet the most needs of different band applications. The designed RF signal transmitter is tested by spectrum analyzer, global navigation satellite receiver. The test results show that the generated signal can be processed by standard GNSS receiver even in -130dBm power level, the acquisition and tracking loop also work well in that kind of situation.