The invention discloses an implementation method of a lightweight block cipher algorithm Wheel, which comprises the following steps of: calculating the number of turns by utilizing an initial encryption key, and sequentially obtaining an intermediate key and a whitening key by utilizing the initial encryption key; wherein each round of operation is composed of an F function operation, an FF function operation and a bitwise exclusive OR operation, each round of operation is used for processing N sets of encrypted information, and N sets of encrypted information corresponding to each next roundof operation are output information of the previous round of operation; and finally, performing Sa replacement operation on the output data subjected to round operation to obtain output data, and performing round encryption operation on the output data and the low bit of the initial encryption key to obtain encrypted plaintext information. According to the method, the encryption security and efficiency are improved.