The invention relates to a scraper cleaning method. The scraper cleaning method includes the several following steps that S1, tin paste attached to a scraper is removed through a flexible sponge; S2, the scraper of which the tin paste is removed is put in a cleaning agent; S3, the scraper is taken out of the cleaning agent and wiped with non-dust cloth; S4, the scraped and shaved scraper is put in a reflow soldering furnace for high-temperature cleaning and low-temperature solidification; S5, the scraper already processed in the reflow soldering furnace is put in an infrared high-temperature roaster for infrared high-temperature radiation cleaning; S6, the scraper which is already subjected to infrared high-temperature radiation cleaning is taken out of the roaster and then put in an ultrasonic cleaning agent for ultrasonic cleaning; and S7, the scraper in the step S6 is put in a baking oven to be baked.