Based on the analysis of the differences between quantitative tourism and quality-quantity combined tourism,as well as causes for tourist product mix to be converted from quantity to quality and quantity,the article suggests specific ways for tourism conversion.

Through the analysis of the misunderstanding existing in the project quality management and its explanation, the authors discuss some phenomena of "quality surplus" and "quality shortage" that occurred in the practice of construction project and puts forward the concepts of "project reasonable quality" with its definitions, too.