Developing elastic and self-healing polymeric semiconductor materials, and connecting two pieces of semiconductor films, where place on the same horizontal surface, through physical contact to achieve self-healing behavior.In the past, self-healing materials are presented in bulk sample, but electronic components usually operate under nano-level dimensions. Although the bulk material can heal itself after damages, it is still difficult to apply in electronic components since it needs additional treatments to achieve self-healing behavior by thermal annealing or solvent annealing that often cost a long time to heal. In this technique, we break through the limitation of bulk sample and successfully employ physical contact for the semiconductor nanofilm on the horizontal surface that the thin films can self-heal at room temperature within 2 seconds. Furthermore, this semiconductor polymer can sustain both mechanical and electronic properties after 500 stretching cycles test.Flexible electronic products are the future trend; however, the flexible semiconductor cannot recover its performance due to the damages after repeated stretching cycles. Thus, we develop the elastic and self-healable semiconductor material in nano-dimension and it has been verified that can self-heal at room temperature within few seconds. It allows the flexible electronics can heal and maintain the performance that extent the utilization of devices.