Abstract: Since the existing infiltration irrigation materials are costly, easy to aging, and highly energy-consumptive, the development of infiltration irrigation technique has been severely constrained. This paper presents a new micro-porous ceramic irrigation emitter for low-pressure infiltration irrigation using quartz sand and talc powder as the main raw materials. We have experimentally tested the open porosity, density, and micro-topography of these ceramic materials and analyzed the effect of material proportion and sintering temperature on structure and hydraulic performance of this new emitter, including bore diameters determined using microscopic photos and a pressure-flow relationship. And the preparation technology of the emitter has been optimized against two indicators of the emitter, its structure and hydraulic performance. The results show that a change in material proportion affects bore diameters and water flow and causes a decrease in the density of micro-porous ceramic while the corresponding changes in open porosity are insignificant, staying in a range of 30.1% ~ 32.0%. Sintering temperature and flow rate have a positive relationship. When sintering temperature reaches the threshold of 1200 ℃, bore diameter becomes uniformly distributed in the range of 10 ~ 40 μm. Based on a comprehensive comparison of the indicators, the talc powder content of 20% under pressure 12 MPa and the sintering temperature of 1200 ℃ are recommended for the new emitter.