The invention provides a multifunctional measurement instrument base and a use method thereof. The base comprises a first horizontal base, a second horizontal base and a connecting bracket, wherein the connecting bracket is formed by an upper support plate, a lower support plate and a support pillar, the first horizontal base is fixed on the upper support plate, the second horizontal base is fixedon the lower support plate, and the upper support plate and the lower support plate are fixedly connected through the support pillar. By utilizing the multifunctional measurement instrument base, twomeasurement instruments can be simultaneously operated at the same measurement points, so that the repeated positioning error caused due to the repeated mounting and dismounting of the instruments isavoided, the working intensity of an operator is reduced, the working time is saved, and the working efficiency is improved.