A zeolite designated as ZK-4 was synthesized hydrothermally in the system (TMA)2O-Na2O-Al2O3-SiO2-H2O at 80-100 ℃ with tetramethylammonium hydroxide as an organic remplating agent. The pure zeolite ZK-4 could be prepared by using the mother liquor obtained afterfiltration as the source of templating agent. The effect of some synthetic conditions such as theamount of tetramethylammonium hydroxide used, n [(TMA)2O + Na2O]/n (Al2O3) ratio,n(SiO2)/n(Al2Os) ratio and crystallization time, etc. on the crystalline phase of the product wasinvestigated. When the following molar ratios of the reaction mixture, n (SiO2)/n (Al2O3)=4-10, n[(TMA)2O+Na2O]/n (Al2O3)＞ 7, n (Na2O)/n (Al2O3) = 0. 5-2. 0, n (H2O)/n(Al2O3)= 80-450, were used, pure zeolite ZK-4 could be obtained. The synthetic productswere characterized by X-ray powder diffraction, atomic absorption spectrophotometry (AAS),adsorption measurement, thermogravimetric analysis(TGA), and 29Si magic angle spinning nuclear magnetic resonance technique. Zeolite ZK-4 has a higher thermal stability than sodium zeolite A due to higher n(Si)/n(Al) ratio of zeolite ZK-4.