What is the tourism income multiplier and what is its significance?

Tourism income multiplier refers to the change of national income and economic influence caused by the injection of tourism economy into a certain area through tourists' consumption. Tourists' income multiplier represents tourists' consumption expenditure in tourist destinations, that is, the final increase of comprehensive economic benefits caused by the injection of tourism. Tourism income multiplier is an important quantitative index to measure the status and role of tourism in the national economy. The existence and development of tourism must rely on the support of material production departments, so it greatly promotes and drives other economic departments and the whole social economy, thus driving the development of the whole national economy.