This paper evade the unilateral of previously study at urban heat island effect , doing from a widespread angles , used the thinking and method of engineering thermal physics , study and expound the cause of the urban heat island effect 本文避开以往热岛效应研究论文的片面性,从更广泛的角度着手,用工程热物理学的研究思想和方法,对城市热岛的产生和发展原因做了比较系统的研究和论述。