Device for testing extension strength of watchband

The utility model discloses a watch strap extension strength testing device, which comprises a testing platform, a driving mechanism, a first positioning piece and a second positioning piece, the first positioning piece is in sliding connection with the testing platform, and the second positioning piece is fixed on the testing platform and is distributed opposite to the first positioning piece; a first positioning structure connected with one end of the watchband is arranged on the first positioning piece, a positioning block connected with the other end of the watchband is arranged on the second positioning piece, and a tension sensor is matched between the second positioning piece and the positioning block; the driving mechanism can drive the first positioning piece to move in the direction close to or away from the second positioning piece. The two ends of the watchband are located through the first locating piece and the second locating piece respectively, then the first locating piece is driven by the dr