‘Xinjiao 23'is a new hot pepper F1 hybrid with early-mid maturing. The cultivar has strong growth vigor and middle resistence to Phytophthora capsici Leonian and virus disease. Fruit is long sheep-horn shape,24.4 cm long,2.98 cm of shoulder diameter,and the flesh thickness is 1.92 mm. The average fruit weight is 42.3 g.