The utility model discloses an online auto -control handling of multistation annular foaming production line carries mould dolly device, the line body including annular foaming production line is equipped with a plurality of dull and stereotyped dollies on the line body, a plurality of years mould dollies, two electricity push away device and two friction wheel transmission, two electricity push away the device and set up respectively in the outside of the last die worker position and the mould unloading station department line body, and two friction wheel transmission push away the device with two electricity respectively and are connected, the inboard of dull and stereotyped dolly is connected with drive chain, is equipped with locating wheel, bolt guiding slide seat and bolt cylinder on the dull and stereotyped dolly, and the locating wheel is installed on the preceding terminal surface of dull and stereotyped dolly, and the bolt cylinder is installed on bolt guiding slide seat, is equipped with the bolt on the piston rod of bolt cylinder, it is equipped with bolt locating plate and leading wheel on the mould dolly to carry, the bolt guiding slide seat of bolt locating plate and dull and stereotyped dolly pass through bolt connection. The utility model discloses a mechanical automation of mould is changed to annular foaming production line, has alleviateed workman's intensity of labour, has improved production efficiency.