A data receiving method, comprising: receiving , by a wireless local area network, WLAN, receiving device by using a first radio frequency module through a first channel, first data that is sent by a WLAN sending device, wherein the first data is all or a part of original data, the original data comprises an original information field and an original check field, the original check field is a result of checking the original information field, and the first channel belongs to a WLAN channel; receiving , by the WLAN receiving device by using a second radio frequency module through a second channel, second data that is sent by the WLAN sending device, wherein the second data is all or a part of the original data, the second channel belongs to the WLAN channel, a frequency of the second channel is different from a frequency of the first channel, the second radio frequency module is different from the first radio frequency module, and the second data is different from the first data; obtaining , by the WLAN receiving device, a received information field based on an information field of the received first data and/or an information field of the received second data; obtaining , by the WLAN receiving device, a received check field based on a check field of the received first data and/or a check field of the received second data; and attempting , by the WLAN receiving device, to check the received information field by using the received check field to obtain the original information field, wherein the received first data comprises a first information field and a first check field, the received second data comprises only a second check field, and the received information field is the first information field, or the received first data comprises a first information field and a first check field, the received second data comprises only a second information field, and the received check field is the first check field. receiving , by a wireless local area network, WLAN, receiving device by using a first radio frequency module through a first channel, first data that is sent by a WLAN sending device, wherein the first data is all or a part of original data, the original data comprises an original information field and an original check field, the original check field is a result of checking the original information field, and the first channel belongs to a WLAN channel; receiving , by the WLAN receiving device by using a second radio frequency module through a second channel, second data that is sent by the WLAN sending device, wherein the second data is all or a part of the original data, the second channel belongs to the WLAN channel, a frequency of the second channel is different from a frequency of the first channel, the second radio frequency module is different from the first radio frequency module, and the second data is different from the first data; obtaining , by the WLAN receiving device, a received information field based on an information field of the received first data and/or an information field of the received second data; obtaining , by the WLAN receiving device, a received check field based on a check field of the received first data and/or a check field of the received second data; and attempting , by the WLAN receiving device, to check the received information field by using the received check field to obtain the original information field, wherein the received first data comprises a first information field and a first check field, the received second data comprises only a second check field, and the received information field is the first information field, or the received first data comprises a first information field and a first check field, the received second data comprises only a second information field, and the received check field is the first check field. <EOS>