The dissolving and growth kinetics of intermetallic compounds for the reaction between solid iron and molten zinc were studied under nitorgen atmosphere over the temperature range between470$^{circ}C$ and 680$^{circ}C$. The rates of dissolution of solid iron into molten zinc were obtained under a static conditon, The amount of dissolution of sold iron and the growth of intermetalic compounds could be determined by means of microscopy. The thickness of intermetallic compound at a given temperature increases with increasing time, whereas for a given time decreases with increasing temperature . The rate of dissolution is controlled by the diffusion process of iron in the effective boundary layer of molten zinc over the temperature range 470$^{circ}$-530$^{circ}C$, 570$^{circ}$-620$^{circ}C$, and 650$^{circ}$-665$^{circ}C$, while by the surface reaction over the range 530$^{circ}$-570$^{circ}C$ and 620$^{circ}$-650$^{circ}C$.