A method for performing spatial positioning on an electronic tag, applied to an electronic device having an electronic tag reader, comprising: arranging at least three sets of three-dimensionally distributed array antennas on the electronic device, each set of array antennas comprising a plurality of antenna array elements extending in one dimension; turning on an electronic tag reader to generate a radio frequency electromagnetic field; acquiring induced voltage generated on each antenna array element in each set of array antennas when the electronic tag reader senses that there is an electronic tag in the radio frequency electromagnetic field; and determining spatial position information of the electronic tag according to the induced voltage; characterized in that: the step of arranging at least three sets of three-dimensionally distributed array antennas on the electronic device, each set of array antennas comprising a plurality of antenna array elements extending in one dimension comprises: arranging three sets of array antennas, every two of which are perpendicular to each other, on the electronic device to form a rectangular coordinate system, the plurality of antenna array elements of each set of array antennas being a plurality of microstrip antennas which are uniformly distributed in a line and forming coordinate points of the rectangular coordinate system; and the step of determining the spatial position of the electronic tag according to the induced voltage comprises: respectively determining three antenna array elements with first three largest induced voltages in the three sets of array antennas; and using identification information or corresponding coordinate positions of the three antenna array elements with the first three largest induced voltages as the spatial position information. arranging at least three sets of three-dimensionally distributed array antennas on the electronic device, each set of array antennas comprising a plurality of antenna array elements extending in one dimension; turning on an electronic tag reader to generate a radio frequency electromagnetic field; acquiring induced voltage generated on each antenna array element in each set of array antennas when the electronic tag reader senses that there is an electronic tag in the radio frequency electromagnetic field; and determining spatial position information of the electronic tag according to the induced voltage; characterized in that: the step of arranging at least three sets of three-dimensionally distributed array antennas on the electronic device, each set of array antennas comprising a plurality of antenna array elements extending in one dimension comprises: arranging three sets of array antennas, every two of which are perpendicular to each other, on the electronic device to form a rectangular coordinate system, the plurality of antenna array elements of each set of array antennas being a plurality of microstrip antennas which are uniformly distributed in a line and forming coordinate points of the rectangular coordinate system; and the step of determining the spatial position of the electronic tag according to the induced voltage comprises: respectively determining three antenna array elements with first three largest induced voltages in the three sets of array antennas; and using identification information or corresponding coordinate positions of the three antenna array elements with the first three largest induced voltages as the spatial position information. arranging three sets of array antennas, every two of which are perpendicular to each other, on the electronic device to form a rectangular coordinate system, the plurality of antenna array elements of each set of array antennas being a plurality of microstrip antennas which are uniformly distributed in a line and forming coordinate points of the rectangular coordinate system; and the step of determining the spatial position of the electronic tag according to the induced voltage comprises: respectively determining three antenna array elements with first three largest induced voltages in the three sets of array antennas; and using identification information or corresponding coordinate positions of the three antenna array elements with the first three largest induced voltages as the spatial position information.