The invention provides a cup saucer mould base strip of a filling machine. The cup saucer mould base strip is made of stainless steel plates and comprises a top plate, wherein a plurality of cup saucer holes are formed on the top plate by punching; the cup saucer holes are formed through the enclosure of columnar surrounding walls extending upwards from the top plate; the two sides of the top plate in the width direction are downwards bent to form the front and back side walls of a cup saucer mould base; and the lower ends of the front and back side walls are bent towards the inner side of the mould base strip. Because the cup saucer mould base strip is made of the stainless steel thin plates, the cup saucer mould base strip is not oxidized as an aluminum alloy; and the annular end faces of the columnar walls formed when the cup saucer holes are formed on the top plate support a cup edge, and serve as bearing faces for a hot pressed seal, the bearing capacity of the cup saucer mould base strip is the same as that of blocky stainless steel. The whole weight of the cup saucer mould base strip is far lighter than that of the blocky stainless steel, so the energy consumption of the whole filling machine can be greatly reduced.