The invention discloses an ecological permeable pavement brick and a preparation method of the brick. The preparation method comprises the steps of sieving waste glass into glass particles with more than 8 meshes, 8-20 meshes, 20-40 meshes and 40-80 meshes, sieving mineral into mineral particles with more than 8 meshes, 8-20 meshes, 20-40 meshes and 40-80 meshes, weighing 30-60% of any-grade mineral particles, 0-20% of glass fine powder and 40-70% of any-grade glass particles according to mass percentage, adding the glass fine powder and a binder aqueous solution to the mineral particles, performing stirring to allow the glass fine powder to be bound on the mineral particles, adding the glass particles, then adding into a grinding tool, and performing stacking and firing. The permeable brick prepared with the method can form a large void ratio by utilizing stacking of the glass particles with the similar particle size, and can form a good, larger-void and stable permeable brick material of a skeleton structure by a cementation effect of glass due to heat preservation at a certain temperature above the softening temperature.