Content of secondary and micronutrients (Ca, Mg. S, Zn and B) in the soil plant tea obtained at a low level but not yet affect the yield of tea in Thai Nguyen. Ca ranged from 0.42 to 3.04 meq/100g soil, Mg ranged from 0.07 to 0.17 meq/100 g soil, total S ranged from 0.009 to 0.019 percent, Zn ranged from 4.72 to 9.72 mg/kg and B ranged from 0.15 to 1.06 mg/kg. Results of soil analysis showed that only low levels of Mg in the soil that is one of the factors limit to growth and development of tea in Thai Nguyen. The elements of Ca, Mg, S, Zn and B identified is not affecting to quality of tea in the studying areas (Thai Nguyen city, Dai Tu and Phu Luong).