Quick overview of the different laser surgery systems used in ENT with their advantages and disadvantages. The best system for endoscopic intranasal surgery is a diode laser with a flexible fibre. Step by step introduction in endoscopic-microscopic intranasal laser surgery. Preparation for outpatient surgery, local anaesthesia, focusing on certain laser techniques for the turbinates (laser-turbinectomy) and the surgery of the nasal septum and functional laser-surgery of the paranasal sinuses. Indications, procedures and pitfalls.