The invention discloses a multifunctional safe sawing device which is mainly composed of a shell, a double-eccentric shaft, a common saw, a sheet cutting device, a safe saw and a handle. According to the multifunctional safe sawing device, the double-eccentric shaft is connected with a safe-amplitude reciprocating lever and a large-amplitude reciprocating lever at the same time, each reciprocating lever is positioned through a reciprocating lever guiding block and a tool apron support, and a saw blade is fixed to the tail end of the safe-amplitude reciprocating lever through a saw blade pressing block; and a saw blade is fixed to one end of the large-amplitude reciprocating lever through a saw blade pressing block, and the other end of the large-amplitude reciprocating lever is connected with a cutter bar. According to the sawing device, a common electric drill is adopted for providing power, during work, a rotating head of the electric drill drives the double-eccentric shaft to rotate, the safe-amplitude reciprocating lever and the large-amplitude reciprocating lever linearly move along with the double-eccentric shaft, and thus the functions of the common saw, the safe saw and the sheet cutting device are achieved at the same time; and the multifunctional safe sawing device is suitable for cutting metal materials and nonmetal materials such as plastic and wood, and can achieve safe cutting under the special conditions such as emergency rescue.