The invention discloses a direct current electric motor, which comprises a direct current electric motor body, wherein the direct current electric motor body is additionally provided with a protecting circuit, the protecting circuit consists of a speed sensor, a current detector, a voltage measurer, a temperature sensor, a silicon controlled module, an address coding module, a driving module, an I/O (input/output) module, a display, a keyboard, a transmitting module and a data processing module, the display and the keyboard of the protecting circuit are embedded at the outer surface of a casing of the direct current electric motor body, and the speed sensor, the current detector, the voltage measurer, the temperature sensor, the silicon controlled module, the address coding module, the driving module, the I/O module, the transmitting module and the data processing module are respectively arranged in the casing of the direct current electric motor body. The direct current electric motor has the advantages that the direct current electric motor realizes the effective integrated work with a comprehensive protection system, meanwhile, the address coding and data transmitting monitoring functions are also supported, and great convenience is brought for the remote integrated monitoring of a plurality of electric motors, so the work efficiency is greatly improved.