The invention belongs to the technical field of building and municipal engineering construction, and particularly relates to a manhole cover synchronous-lifting construction process. An lining ring isadditionally arranged on the basis of an existing adjustment ring, and stiffening rib grooves and rotating shaft grooves are formed in the lining ring, so that a manhole cover and the adjustment ringare always clamped and limited together, the manhole cover can be synchronously lifted and mounted through construction using the adjustment ring and road base layer paving, the construction qualityis stable and reliable, the material saving and environment-friendly effects are achieved, asphalt mixtures around the manhole cover are efficiently paved and compacted, the overall consistency and flatness of a road structure layer are ensured, road surface driving is comfortable, and the structure is safe and reliable.