Method for filtering solid-liquid slurry

A method for filtering solid-liquid slurry with a temperature of 100-500°C is provided, wherein the method comprises: injecting the solid-liquid slurry into a ceramic membrane filter (2) for filtrating so as to obtain a purified material and a concentrated material, wherein the solid content of the concentrated material is higher than the solid content of the solid-liquid slurry, and the solid content of the purified material is lower than the solid content of the solid-liquid slurry; before injecting the solid-liquid slurry into the ceramic membrane filter (2), heating a filter core of the ceramic membrane filter (2) with a heating speed of 5-150°C/h so as to allow the temperature difference between the filter core and the solid-liquid slurry to be not more than 50°C. The use of the method can effectively prevent the cracking of the ceramic membrane filter core; thereby ensure stable filtering effect of the whole filtering process.