The utility model discloses a carrier, which comprises a vehicle body base, a carriage, a first driving wheel set, a second driving wheel set, a driving motor and an operation box, wherein the carriage is arranged above the vehicle body base; the first driving wheel set and the second driving wheel set are arranged on left and right sides below the vehicle body base respectively; the first driving wheel set and the second driving wheel set comprise the same number of driving wheels; the first driving wheel set is provided with a first caterpillar band; the second driving wheel set is provided with a second caterpillar band; the driving motor is arranged between the first driving wheel set and the second driving wheel set; the operation box is arranged at one end of the upper side of the vehicle body base, and is used for controlling the driving motor. The carrier is compact and delicate in structure, flexible and convenient to move without spatial limitation, contributes to saving time and labor, and safer and more reliable. Devices and the like can be carried to any place easily by one person, so that labor force used in overhauling work can be reduced greatly, higher efficiency is achieved, the labor cost is reduced greatly, and very high economic benefit and social benefit are achieved.