The invention provides a method for synthesizing an aluminosilicate molecular sieve by using a seed crystal method. Natural aluminosilicate mineral activated by alkali treatment is used as a seed crystal for synthesis of the aluminosilicate molecular sieve, a target molecular sieve product is obtained through hydrothermal crystallization synthesis, a conventional molecular sieve seed crystal doesnot need to be added in the synthesis process, any organic template agent is not used, and therefore, a process of roasting the synthesis product to remove the template agent is not required. According to the method for synthesizing the aluminosilicate molecular sieve, the requirements on crystallinity and nucleation time can be met, the synthesis cost of the aluminosilicate molecular sieve is greatly reduced, environmental pollution caused by roasting to remove the template agent is greatly relieved, the development concept of green synthesis of the molecular sieve is met, and the method hasa wide application prospect.