The adsorption method is fit for selectively extracting lithium resource form brine water with high lithium and magnesium content, which is simple and environmental friendly. Titanium ion adsorbent is primarily used for lithium adsorption from weak acid and strong alkali brine water system such as carbonate type brine and lithium sediment solution. The Ti Lithium Adsorbent independently developed by OriginWater Membrane Technology Research Center (Beijing) Co., Ltd has good heat stability, high adsorptive selectivity and capacity, and a long service life. The molding of the adsorbent mainly adopt special high molecular material independently developed by the company and functional powder composite technology, combining with special moulding device, to achieve batch production. The diameter of adsorbent can be adjusted within a range of 0.5~5 mm to have a uniform size.