The utility model provides an use dual power supply's special change acquisition terminal, specially become to be provided with on the acquisition terminal and be used for the forceful electric power terminal seat that is connected with external power supply, set up the terminal on the forceful electric power terminal seat and connect the copper bar, main power supply and auxiliary electrical power source mutual isolation, still be provided with power module and central processing unit module in specially becoming the acquisition terminal, power module is connected the current switchover who is used for main power supply and auxiliary electrical power source access with forceful electric power terminal seat and becomes the required electric current of special change collection end system, and main power supply and auxiliary electrical power source that central processing unit module connection power module is used for special control to become the acquisition terminal switch, the utility model discloses a technique effect: through the control of central controller module, can be convenient switch between main power supply and auxiliary electrical power source, the switching process is automatic, seamless, can guarantee that special change acquisition terminal carries out continuous monitoring and data acquisition.