To provide a planographic printing method requiring no development, forming the surface of a printing plate by applying imagewise exposure to a negative plate and forming the printing plate reduced in printing contamination at the time of printing and excellent in printing durability to perform printing, to provide a planographic printing apparatus capable of manufacturing the printing plate on a printing press and to enable the repeated reuse of a printing original plate.

In the planographic printing method, a layer of a hydrophobic substance is provided to the printing original plate having a titanium oxide- containing layer and irradiated with far ultraviolet active light with a wavelength of 250-320 nm to form an imagewise hydrophilic region to obtain the printing plate. The planographic printing apparatus is also disclosed. As a light source of active light, a solid laser with an oscillation wavelength of 256 nm or a low pressure mercury lamp with a vapor pressure of 0.1 kPa or less is preferable.