The invention relates to a method for rapidly and simultaneously determining contents of manganese, silicon, phosphorus, arsenic, lead, tin, antimony and bismuth in ferromanganese by microwave digestion-ICP-AES. A sample is automatically pretreated by microwave digestion, an IEC data model is programmed into a calculation method by an interference coefficient method, correction of the interferencecoefficient method in an ICP spectrometer is reasonably utilized to effectively mask interference of a main element manganese to impurity elements such as silicon, phosphorus, arsenic, lead, tin, antimony and bismuth to achieve simultaneous analysis of primary and secondary elements. The sample of the method is converted into a liquid state under a high pressure sealed state, the loss of trace elements such as arsenic, lead, tin, antimony and bismuth can be minimized, a degree of accuracy of an analysis result is improved, only HCl and HNO3 are used in a digestion process, the amount of usageis small, pollution and cost are minimized, and the method is cleaner and more environmentally friendly.