Processing method and apparatus of 3D display signal, and 3D player

The invention discloses a processing method and apparatus of a 3D display signal, and a 3D player, and relates to the display field, being able to solve the problem that left and right frame playing and opening/closing of lenses cannot be completely synchronous. The processing method of a 3D display signal includes the steps: receiving a frame signal including a left frame signal and a right frame signal; during the process of coding the frame signal, setting a frame identifier in the frame signal, wherein the frame identifier includes a left frame identifier and/or right frame identifier; the left frame identifier is used for identifying the left frame signal; and the right frame identifier is used for identifying the right frame signal; during the process of decoding the frame signal, obtaining the frame identifier through analysis; and during the process of playing left and right frames, according to the obtained frame identifier through analysis, synchronously outputting an indication signal, wherein the indication signal is used for controlling opening/closing of 3D spectacle lenses. The processing method and apparatus of a 3D display signal are used for processing a 3D display signal.