A packet transceiver system includes a detection module (210), a dropped rate determination module (110), a transmitting module (120), and a recalculation module (230). The detection module detects a network congestion status. The dropped rate determination module determines a packet dropped rate based on the network congestion status. The transmitting module transmits voice packets, dropping voice packets according to the packet dropped rate, ensuring an even distribution of dropped voice packets during the transmission. The recalculation module receives the un-dropped voice packets, and recalculates the dropped voice packets. A packet transceiver method is also provided.