There are few methods for determining heavy metals in fertilizers,In this paper,the microwave digestion method was established as the sample pretreatment through the analysis of several experiments,and the determination of lead and cadmium content by the atomic absorption graphite furnace method.The results showed that the limit of lead detection was 1.6 μg/L,the limit of cadmium detection was 0.11 μg/L;Seven parallel relative standard deviations were less than 3％;The recovery rates of 3 concentrations were 90%~110%.The microwave digestion method named as GFAAS is accurate and stable for the determination of lead and cadmium in fertilizers,and it can be used as a recommended method to save manpower and material resources,and also save time.