This work is based on the virtual teacher image of the production of programming teaching fragments. Virtual teacher is a virtual three-dimensional image designed in a three-dimensional environment, which has geometric shape, can interact with the environment, and can perceive and influence the surrounding environment. It can be controlled by software through intelligent agent technology or by real people through motion capture technology. Virtual teachers can communicate with students through natural language, body language, etc., and can be used for online teaching, micro-course production, learning resource design and so on. The virtual teacher image is vivid and lovely, the interaction is smooth, the affinity is strong, through the virtual teacher teaching, help to improve the quality of teaching. This work creatively implants the virtual image into the teaching application to create a virtual teacher, which has the following advantages. Technically: reduce the cost of learning and using, and quickly build an image. Efficiency: Reduce time costs and improve lesson recording efficiency. Effect: great to attract the attention of students, so that the classroom is no longer boring, is conducive to the role of teachers.