Abstract：‘Tianjiao No.10’ is a new mid-early maturing hot pepper F1 hybrid developed by crossing clampepper inbred 114 as female parent and clam pepper inbred 67 as male parent. The plant has medium growth vigor，and is 83.72 cm in hight and 73.29 cm in width．The single plant can bear 23.5 fruits. The first flower sets at the 7.95 th node．Its fruit is of large claw shape with smooth surface．Its fruit is 28.68 cm in length and 3.14 cm in diameter. The flesh thickness is 0.332 cm . The single fruit weight is 59.25 g．It tastes medium hot and has good commercial character. It is tolerant to low temperature and scant sunlight. It can yield over 60 t·hm-2. It is suitable for cultivation both in open and protected fields in Tianshui of Gansu.