Aim\ To study the preparation method of basic magnesium aluminum carbonate. Methods\ Through orthogonal experiments the optimum technological conditions is obtained. Results\ A new method is proposed to produce basic magnesium aluminum carbonate. Conclusion\ Basic magnesium aluminum carbonate (Mg\-5Al(OH)\-3(CO\-3)\-5·10H\-2O ) with good properties can be produced from Mg(NO\-3)\-2
Al(NO\-3)\-3 and Na\-2CO\-3 under certain technological condition.