A medical probe includes a hollow needle body, a light-transmitting optical module and an imaging module. The hollow needle body defines a needle passage extending along an axis of the needle body, and includes an outer tubular wall surrounding the needle passage. The outer tubular wall includes a penetrating section formed with a forward penetrating end, and a needle opening formed in the penetrating section and communicated with the needle passage. The light-transmitting optical module is disposed inside the needle passage, includes a light entering region and transmits the light within the needle passage. The imaging module is disposed in the needle passage to receive and process the light transmitted through the light-transmitting optical module.