The invention discloses a rustproof friction increasing method for a nut and a nut column of a ship lift. Firstly, a nut or nut column sample required to be subject to rust prevention is coated with a friction increasing grease protection material coating with the thickness ranging from 30 micrometers to 70 micrometers, then, an ultraviolet lamp is used for irradiating the friction increasing protection material coating on the surface of the sample, the irradiating time reaches 12 hours to 24 hours, and the requirement that the surface friction coefficient of the sample is larger than 0.1 while the nut or nut column is subject to rust prevention is met; the distance between the ultraviolet lamp and the sample ranges from 15 cm to 20 cm; when the ultraviolet lamp is used for irradiating the sample, the temperature of the sample is controlled to range from 60 DEG C to 80 DEG C; and the power of the ultraviolet lamp ranges from 200 W to 400 W. According to the scheme, the method has the beneficial effects of being simple in process, rapid, efficient, reliable in performance and the like.