The invention relates to the technical field of advertisement scheduling, and in particular to an efficient advertisement scheduling method and system. The advertisement scheduling method comprises the following steps: S1: establishing a corresponding bit array according to scheduling elements of the system, and performing secondary encoding on the bit array to form a character array; S2: receiving advertisement information submitted by the user; S3: editing the received advertisement information into a corresponding bit array, and performing secondary encoding on the bit array to form a corresponding character array; and S4: matching the converted character array with the character array of a corresponding channel position of the system. The invention provides a new efficient advertisement scheduling method and system, according to the advertisement scheduling method and system, the scheduling elements of the system are edited into the character array, the received advertisement information is edited into the character array, and the character array edited from the advertisement information is matched with the character array of the system, thereby greatly reducing the computationamount, avoiding the occurrence of advertisement conflicts, and improving the user experience.