The invention discloses an intelligent optical cable cross connecting box which comprises a box bottom, a heat dissipation opening, a box body, a key induction area, a ventilation mechanism and a rainfall sensor; a box top is arranged at the top end of the box body, the rainfall sensor is arranged on the box top, the ventilation mechanism is arranged between the box top and the box body, and the ventilation mechanism comprises a connecting box. An air cylinder is fixedly installed in the connecting box, the output end of the air cylinder is fixedly connected with a connecting rod, the end, away from the air cylinder, of the connecting rod stretches out of the connecting box and is fixedly connected with the bottom end of the box top, a fixing block is arranged on one side of the connectingbox, a sliding groove is formed in the fixing block, and the top end of the sliding groove is fixedly connected with a limiting block. A movable block is slidably connected into the sliding groove, aventilation opening is formed in the movable block, and a dustproof net is arranged on the ventilation opening. The intelligent optical cable cross connecting box is reasonable in structure, high inintelligent performance and good in safety performance, operation and maintenance of workers are facilitated, problems can be detected in time, and the working efficiency is improved.