The invention discloses a method for preparing a non-sintering water permeable brick by utilizing solid waste such as municipal sludge, construction garbage, rare earth tailings and pulverized fuel ash. The method comprises the following steps: A, taking dewatered sludge of a wastewater treatment plant, construction garbage steel slag, the rare earth tailings and the pulverized fuel ash as water permeable brick raw materials for future use; B, taking and mixing the pulverized fuel ash and cement in a ratio of 2 to 3, then taking the mixture as an inorganic adhesive material, and then enablingthe mixture to be mixed with construction garbage aggregate in a ratio of about 1 to 3; C, preparing a NaOH solution which serves as the exciting agent of the inorganic adhesive material; D, uniformlymixing the sludge with the rare earth tailings in a ratio of 5 to 1, adding the mixture into the mixture obtained in step B, and mixing uniformly; E, adding the mixture obtained in step D and the NaOH solution prepared in step C into a stirrer in a mass ratio of 5 to 1, stirring for 1min at a revolving speed of 1,000rpm to mix the mixture and the NaOH solution uniformly; and F, pouring the stirred mixture into a mold to prepare an adobe, enabling the adobe to be subjected to natural curing for 28d, and then preparing the water permeable brick with a compression-resistant level up to MU30.