The invention provides a downhole electric control compression type packer, which comprises a base pipe, a motor, a speed reduction device, a transmission device and a packing device, wherein the motor, the speed reduction device, the transmission device and the packing device are sheathed on the base pipe, the motor comprises a circular motor output shaft, the circular motor output shaft is rotatably sheathed on the base pipe, the speed reduction device comprises a circular NN-shaped planetary gear speed reducer with small teeth difference (5), the circular NN-shaped planetary gear speed reducer with small teeth difference (5) comprises a circular input shaft and a circular output shaft, the input shaft of the circular NN-shaped planetary gear speed reducer with small teeth difference (5) is connected with the circular motor output shaft, and the transmission device comprises a thread pipe (6), a transmission nut sleeve (9) and a lower sleeve (10).