Building template mounting rack

The utility model discloses a building template mounting rack which comprises symmetrically arranged T-shaped plates, side edge limiting plates symmetrically connected between the T-shaped plates, sliding grooves symmetrically formed in the inner sides of the T-shaped plates, sliding blocks connected between the two ends of the side edge limiting plates and the sliding grooves, a moving mechanism arranged between the T-shaped plates, and a second moving mechanism arranged between the side edge limiting plates. The moving mechanism is arranged at the outer ends of the T-shaped plates, the moving mechanism comprises threaded rods symmetrically arranged between the T-shaped plates, a sleeve is connected between the inner ends of the threaded rods, internal threads are arranged in the sleeve, the upper position and the lower position of the building formwork are clamped through the T-shaped plates, and the distance between the left side and the right side of the building formwork is adjusted through the side edge