An elliptical trainer is provided with a frame, a resistance device, two cranks, two waving assemblies, and two flexible members. The frame includes a first pivot. The resistance device provides a resistance and includes a wheel with an axis. The two cranks are arranged at a left and a right side of the wheel, respectively, and each crank has a first end coupling with the axis. The two waving assemblies are arranged at a left and a right side of the frame, respectively, and each waving assembly has a front end pivotally coupling with the first pivot and a second end coupling with a pedal. In addition, each crank has a second end coupling with a corresponding waving assembly, and each flexible member has a first end indirectly pivoted to the first pivot and a second end coupled to a corresponding waving assembly.