Abstract: According to characteristics of a low-grade manganese carbonate ore, it made a respective use of high gradient magnetic separation and shaker gravity separation, as well as experimental study on flotation process of the ore．Experimental results showed that wet high-intensity magnetic separation was the reasonable way to deal with the mine. The magnetic concentrate with Mn grade of 21.04% and Mn recovery of 75.55% could be obtained by adopting high intensity process of one-stage roughing, one-stage scavenging, two-stage cleaning, and regrinding magnetic separation of cleaning tailings. The experimental study provides a basis for the development of similar manganese ores.