The cannula implantation system is an accepted method of acute and chronic intracranial drug administration for animal experiments.A single cannula system includes a guide cannula, dummy cannula, internal cannula, and fixing screw. Together with our stereotaxic instruments, holders, fixing screws, PE cannulas, injection pumps, and other related products, this system provide a set of simple and effective experimental tool for unilateral intracranial administration for neuroscientists. More importantly, we offer users can customized cannulas based on their specific experimental requirements.