The invention discloses a flexible earth anchor drilling and taking machine, comprising a prime motor capable of walking and a portal frame arranged on the prime motor. The portal frame is provided with a feeding mechanism, a driving cylinder and an earth anchor drilling and taking mechanism thereon. The driving cylinder is connected with the earth anchor drilling and taking mechanism in a transmission way through the feeding mechanism. The drilling and taking machine also comprises a landing leg and a pull rod, wherein the landing leg is vertically arranged on the prime motor and near the portal frame, two ends of the pull rod are respectively articulated with the prime motor and the portal frame, the lower part of the portal frame is articulated with the prime motor. The drilling and taking machine integrates walking and operating into one piece of special equipment, causes a hydraulic power rotary helical slice to enter earth to certain depth, depends on the withdrawal resistance ofthe helical slice against the earth mass to form anchoring force, and can take out the flexible earth anchor after use for reuse, thus realizing mechanical construction and improving the efficiency of preparation for line construction to great degree.