In programming teaching, the quality of instance design plays an important role to the effect of entire teaching. Taking the VB programming teaching as an example, we put forward an instance design method based on constructivism that fuses the teaching idea of and scenes creating. It uses the real and familiar example in life to help teachers to hold the holistic programming teaching from the shallower to the deeper step by step. Teaching practices have proved that it's easy to stimulate study interest and exploration desire, ...