Abstract: Rendezvous and intercept are two classical problems, which study the precise relative motion between two moving objects. Comparison between rendezvous and intercept is missing in traditional courses, therefore the teaching is less effective and reduplicated. The relation between rendezvous and intercept is thoroughly investigated from the aspect of dynamic model and guidance law. The barrier between two courses is removed and an effective link is established, which helps establish a novel frame and improve the teaching effectiveness of space dynamics.