An optical probe for detecting a biological tissue includes a surface imaging module extracting and generating a surface image of biological tissue, wherein the surface imaging module includes a telecentric lens, a first optical mirror, a lens assembly, an imaging sensor, and a light source emitting a first detecting light; and a tomography capturing module, extracting a tomography image of the biological tissue and receiving a second detecting light, wherein the tomography capturing module includes the telecentric lens, the first optical mirror, a scanner, and a first collimator, wherein thefirst detecting light passes via a first optical path from the light source to the imaging sensor through the biological tissue, the telecentric lens, the first optical mirror, and the lens assembly in sequence, and the second detecting light passes via a second optical path from the first collimator to the first collimator through the scanner, the first optical mirror, the telecentric lens, the biological tissue, the telecentric lens, the first optical mirror, the scanner, and the first collimator in sequence.