Liquid/gas double-medium continuous circular control system, implementation method and drilling system

The invention discloses a liquid/gas double-medium continuous circular control system, an implementation method and a drilling system. The drilling system comprises a pneumatic power device, a liquid power device, a gas-liquid mixing device, a continuous circular control system and a continuous circular short circuit. In liquid/gas double-medium continuous circular drilling, gas or liquid is taken as a circulation medium or a gas-liquid mixed medium, so that a continuous circulation state can be kept by switching between positive circulation and side circulation; when air is taken as a circulation medium for drilling circularly and continuously, depressurizing and boosting time is saved, and underground complex conditions caused by change of pressure are reduced; in air continuous and circular drilling, filtering circulation equipment such as a vibrating sieve and the like is not used, so that the working efficiency is further increased, and environmental pollution and running cost are lowered greatly; and meanwhile, the liquid/gas double-medium continuous circular drilling system further has the advantages of simple structure, convenience in operating and the like, and has a good market popularization prospect.