The invention discloses a mini type photoelectric detecting ball and a portable display controller thereof, which are particularly applied to detecting and scouting the sealed space or dangerous environment, wherein the detecting ball consists of a spherical buffer layer and a ball unit; the spherical buffer layer is tightly sleeved at the outer layer of the ball unit; the ball unit is composed of a ball shell, a driving component, an acousto-optic component and so on, wherein appliances including a mini type camera, an infrared radiating lamp, a wireless module, a sound sensor and a photosensitive sensor are mounted. The portable display controller of the invention comprises a sound video antenna and a control transmission antenna; a general switch, a louder speaker, a liquid crystal display screen, a group of press buttons and a group of external ports are mounted. The mini type photoelectric detecting ball of the invention has the following advantages of small in volume, convenient to bring, good in shockproof and anti-impact performance; after landing, the invention can automatically adjust the gesture to receive the remote distance order to perform the rotating scan at 360 degrees and transmit the video picture and the audio information in real time; moreover, the detecting ball can perform the man-machine remote linkage work under the different light intensity.