the sales manager is mainly responsible for the promotion of hotel catering, guest rooms and other business items, as well as the publicity of the hotel; Public relations manager is mainly engaged in reception in real work. In fact, according to the word "public relations", he must have rich knowledge to be competent. He not only needs to be familiar with hotel management, reception, management, local culture, international etiquette, etc., but he has degraded a lot in practical sense.