The utility model discloses a single-point small-range solder sealing sensor, which comprises an elastic body and a strain gauge which is connected with a wheatstone bridge, and is characterized in that the middle part of the elastic body is provided with a strain hole which runs through in the forward-backward direction; a strain region is formed on the inner circumferential surface of the inner wall of the strain hole; and the strain gauge is adhered to the strain region. Compared with the prior art, the single-point small-range solder sealing sensor has the advantages that the strain gauge is attached to the inner circumferential surface of the strain hole, so that the moisture-proof and damp-proof properties are greatly enhanced, and normal use of the sensor under a severe environment is facilitated, thereby expanding the application of the solder sealing sensor in small-range measurement.