Disclosed in the invention are an in-vehicle intelligent WiFi microphone and an audio delay processing method therefor, by which the problem that the existing in-vehicle microphone is prone to interference and provides poor sound quality when FM signals are used to establish audio transmission with an in-vehicle entertainment system, can be solved. The in-vehicle intelligent WiFi microphone comprises a first microphone, a first main control circuit board, a first rechargeable battery and a first main mounting housing. The first microphone, the first main control circuit board and the first rechargeable battery are arranged in the first main mounting housing. The first microphone is located at an upper end of the first main mounting housing, and the first microphone and the first rechargeable battery are electrically connected to the first main control circuit board. The first main control circuit board is integrally provided with a first main control processor, as well as an audio mixing processing module, an FM receiving module and a WiFi communication module, which are electrically connected to the first main control processor.