The invention relates to a communication iron tower with an automatic windproof and rainproof function. The communication iron tower with the automatic windproof and rainproof function comprises a communication chamber, a tower body and a foundation, wherein the communication chamber comprises communication equipment, a baffle, a fixing block, a rotating shaft, a communication antenna, a support, a walking mechanism, a rainfall detecting mechanism, a wind speed detector and a closing module; the walking mechanism comprises a first motor, a screw, a walking block, a bearing and a fixing plate; the rainfall detecting mechanism comprises a detecting plate, a spring, an upper contact piece, a lower contact piece and a detecting kit; the closing module comprises a second motor, a first round gear and a second round gear. According to the communication iron tower with the automatic windproof and rainproof function, when in high winds, the wind speed detector transmits signals to a CPU (central processing unit); in excessive rainfall or hailstone weather, the rainfall detecting mechanism performs detection and transmits electric signals to the CPU, the CPU moves the communication antenna into the communication chamber through the walking mechanism, the closing module closes the baffle onto the communication chamber to seal up the communication chamber and further to protect the communication antenna from damage.