The invention discloses an environmental electromagnetic wave measuring device which is characterized by comprising an electromagnetic wave measuring instrument, an electromagnetic wave measuring module, a digital-to-analog conversion module, a chip, a memory, an analog-to-digital conversion module and an output module, wherein the electromagnetic wave measuring module comprises the electromagnetic wave measuring instrument; the electromagnetic wave measuring instrument is connected with the digital-to-analog conversion module; the digital-to-analog conversion module is connected with the chip; the chip is connected with the analog-to-digital conversion module and is also connected with the memory; and the analog-to-digital conversion module is connected with the output module. The invention of the invention has the beneficial effect that the environmental electromagnetic wave measuring device can be used for measuring the content of electromagnetic waves in the environment to identify whether the environment is suitable for people to live or not so as to prevent people from being injured by excess electromagnetic wave radiation, thereby ensuring the health of people. The environmental electromagnetic wave measuring device of the invention can be conveniently carried and operated and is very practical.