A communication method of a voice board, a serial port of a main board of an air conditioner is respectively connected with an independent communication component of a detection board adapted to achieve a communication function of the air conditioner, and connected with a voice communication component of the voice board adapted to achieve an online voice function of the air conditioner, the communication method of the voice board comprising: powering the voice communication component to obtain address information of the independent communication component, and identity information of the main board; sending a broadcast packet to the independent communication component based on the address information and the identity information, and then receiving a broadcast response packet returned by the independent communication component based on the broadcast packet; and parsing the broadcast response packet, and when the parsing is successful, establishing a communication connection between the voice communication component and the independent communication component, so as to establish a local area network between the voice communication component and the independent communication component; characterized in that after establishing the communication connection between the voice communication component and the independent communication component or determining that the local area network between the voice communication component and the independent communication component maintains communication, the method further comprises: controlling the voice communication component to send a data packet to the independent communication component, the data packet carrying a first field name of first data to be acquired by the voice communication component; determining whether the voice communication component receives a data response packet returned by the independent communication component, the data response packet carrying first data to be acquired by the voice communication component; when the voice communication component receives the data response packet returned by the independent communication component, determining that the data transfer between the voice communication component and the independent communication component through the local area network is normal, and when the voice communication component does not receive the data response packet returned by the independent communication component, re-sending the data packet to the independent communication component according to a first set count. powering the voice communication component to obtain address information of the independent communication component, and identity information of the main board; sending a broadcast packet to the independent communication component based on the address information and the identity information, and then receiving a broadcast response packet returned by the independent communication component based on the broadcast packet; and parsing the broadcast response packet, and when the parsing is successful, establishing a communication connection between the voice communication component and the independent communication component, so as to establish a local area network between the voice communication component and the independent communication component; characterized in that after establishing the communication connection between the voice communication component and the independent communication component or determining that the local area network between the voice communication component and the independent communication component maintains communication, the method further comprises: controlling the voice communication component to send a data packet to the independent communication component, the data packet carrying a first field name of first data to be acquired by the voice communication component; determining whether the voice communication component receives a data response packet returned by the independent communication component, the data response packet carrying first data to be acquired by the voice communication component; when the voice communication component receives the data response packet returned by the independent communication component, determining that the data transfer between the voice communication component and the independent communication component through the local area network is normal, and when the voice communication component does not receive the data response packet returned by the independent communication component, re-sending the data packet to the independent communication component according to a first set count. controlling the voice communication component to send a data packet to the independent communication component, the data packet carrying a first field name of first data to be acquired by the voice communication component; determining whether the voice communication component receives a data response packet returned by the independent communication component, the data response packet carrying first data to be acquired by the voice communication component; when the voice communication component receives the data response packet returned by the independent communication component, determining that the data transfer between the voice communication component and the independent communication component through the local area network is normal, and when the voice communication component does not receive the data response packet returned by the independent communication component, re-sending the data packet to the independent communication component according to a first set count.