Tourism, known internationally as tourism industry, is a comprehensive industry relying on tourism resources and taking tourism facilities as conditions, specializing in or mainly engaged in attracting and receiving tourists, and providing them with services such as transportation, sightseeing, accommodation, catering, shopping and entertainment. Tourism consists of three elements: tourism resources, tourism facilities and tourism services.

According to business types, tourism can be divided into organizing domestic tourists to travel in their own countries, organizing domestic tourists to travel abroad and receiving foreigners to travel in their own countries. Tourism is an industry that provides tourists with sightseeing services based on tourism resources and facilities. Also known as smokeless industry and invisible trade.