The present invention discloses a portable electric farm implement for sowing, fertilizing and harvesting of corn. The portable electric farm implement comprises a stainless steel plate frame, a storage battery and so on. The stainless steel plate frame is connected to a sowing and fertilizer-applying device, a sowing compacting device, a cutting device, and a harvesting device. The sowing and fertilizing device comprises an electric driving wheel for sowing and fertilizer applying, a sowing and fertilizer-applying rotating rod, a sowing and fertilizer-applying slider, a slantwise driving rodfor sowing and fertilizer applying, a sowing and fertilizer-applying moving rod, a sowing and fertilizer-applying linkage, two fertilizer-applying moving rods and one sowing moving rod, a funnel-shaped fertilizer-applying box, a fertilizer-applying communicating pipe, a fertilizer-applying pipe, a triangular plough, a funnel-shaped sowing box, a sowing pipe, a sowing communicating pipe, a sowing piston, a sowing ring and the like. The portable electric farm implement for sowing, fertilizing and harvesting of corn is simple in structure, wide in scope of application, high in mechanical strength, good in effect, environmental friendly, high in working efficiency, and uniform in sowing and fertilizer applying; and the portable electric farm implement is integrated with the functions of fertilizer applying, sowing and harvesting, reduces hard work of a peasant, and is beneficial to the peasant's health.