A microstrip antenna structure, wherein the microstrip antenna structure comprises an antenna radiation assembly, an antenna feed assembly, a first dielectric plate, a second dielectric plate, and an antenna ground, the antenna radiation assembly comprising a radiation patch and a coupling patch; the coupling patch and the antenna feed assembly being mutually communicatively provided on a first side surface of the second dielectric plate, and the antenna ground being provided on a second side surface of the second dielectric plate opposite to the first side surface of the second dielectric plate; the radiation patch being provided on a first side surface of the first dielectric plate, and an opposite side surface of the first dielectric plate being laminated over the second dielectric plate and spaced by the coupling patch and the antenna feed assembly, wherein the radiation patch has on the second dielectric plate a patch projection area that at least partially overlaps with the coupling patch, the antenna feed assembly being located outside of the patch projection area; wherein the coupling patch comprises a first strip-shaped patch, a second strip-shaped patch, a third strip-shaped patch, and a fourth strip-shaped patch that are annularly distributed, the first strip-shaped patch having a length extension direction that is perpendicular to that of the second strip-shaped patch; wherein the first strip-shaped patch is spaced apart from the third strip-shaped patch, the length extension direction of the first strip-shaped patch coinciding with that of the third strip-shaped patch; wherein the second strip-shaped patch is spaced apart from the fourth strip-shaped patch, the length extension direction of the second strip-shaped patch coinciding with that of the fourth strip-shaped patch; and wherein an interval space between the first strip-shaped patch and the third strip-shaped patch merges with that between the second strip-shaped patch and the fourth strip-shaped patch; characterized in that the antenna feed assembly comprises a signal transmission strip and a plurality of feed connection strips, the feed connection strips having a total number of less than four; wherein the signal transmission strip is in communication with the first strip-shaped patch, the second strip-shaped patch, the third strip-shaped patch, and the fourth strip-shaped patch through the plurality of feed connection strips, wherein each of the feed connection strips is configured to communicate respective end portions of any pair of adjacent strip-shaped patches among the first strip-shaped patch, the second strip-shaped patch, the third strip-shaped patch and the fourth strip-shaped patch, which end portions are distal from the interval space. the coupling patch and the antenna feed assembly being mutually communicatively provided on a first side surface of the second dielectric plate, and the antenna ground being provided on a second side surface of the second dielectric plate opposite to the first side surface of the second dielectric plate; the radiation patch being provided on a first side surface of the first dielectric plate, and an opposite side surface of the first dielectric plate being laminated over the second dielectric plate and spaced by the coupling patch and the antenna feed assembly, wherein the radiation patch has on the second dielectric plate a patch projection area that at least partially overlaps with the coupling patch, the antenna feed assembly being located outside of the patch projection area; wherein the coupling patch comprises a first strip-shaped patch, a second strip-shaped patch, a third strip-shaped patch, and a fourth strip-shaped patch that are annularly distributed, the first strip-shaped patch having a length extension direction that is perpendicular to that of the second strip-shaped patch; wherein the first strip-shaped patch is spaced apart from the third strip-shaped patch, the length extension direction of the first strip-shaped patch coinciding with that of the third strip-shaped patch; wherein the second strip-shaped patch is spaced apart from the fourth strip-shaped patch, the length extension direction of the second strip-shaped patch coinciding with that of the fourth strip-shaped patch; and wherein an interval space between the first strip-shaped patch and the third strip-shaped patch merges with that between the second strip-shaped patch and the fourth strip-shaped patch; characterized in that the antenna feed assembly comprises a signal transmission strip and a plurality of feed connection strips, the feed connection strips having a total number of less than four; wherein the signal transmission strip is in communication with the first strip-shaped patch, the second strip-shaped patch, the third strip-shaped patch, and the fourth strip-shaped patch through the plurality of feed connection strips, wherein each of the feed connection strips is configured to communicate respective end portions of any pair of adjacent strip-shaped patches among the first strip-shaped patch, the second strip-shaped patch, the third strip-shaped patch and the fourth strip-shaped patch, which end portions are distal from the interval space.