The utility model relates to an optical fiber temperature and pressure measuring nipple which comprises a clamping sleeve, a connector, a protection cavity and a plug body which are sequentially connected from left to right, and an optical fiber, an FBG temperature sensor, an FP pressure sensor, a corrugated pipe and a pressure guide hole which are arranged in the protection cavity, and the clamping sleeve, the connector, the protection cavity and the plug body are connected in a sealed mode. The protection cavity comprises a first protection cavity body, a second protection cavity body and athird protection cavity body which are sequentially arranged from left to right. The first protection cavity, the second protection cavity and the third protection cavity are connected in a sealed mode, an optical fiber is arranged in the first protection cavity, an FBG temperature sensor is arranged on the optical fiber, the left end of the optical fiber penetrates through the connector and thenextends into the clamping sleeve, and the right end of the optical fiber is connected with an FP pressure sensor arranged in the first protection cavity. The device is good in sealing performance, high in measurement precision and capable of adapting to hydrate exploration and pilot production operation environments.