Foldable desk frame

The utility model relates to a foldable desk frame, which comprises a pedestal. The bottom end of a pillar is combined on the pedestal, a long pivot frame which can be turned forwards and backwards is pivoted on the top end of the pillar to be used for causing the table plate to be arranged on the pivot frame, two clamping plates on a long side are wrapped on the left and the right two sides of the pillar, and a groove hole on the clamping plate is sheathed on a pivot convex part on the pillar; when the turned frame is in the horizontal and flat state, the rear edge of the clamping plate can be abutted with a clamping convex part on the side face of the pillar, and then the front edge can be embedded and clamped by a horizontal clamping plate of a locking assembly; if the locking assembly is twisted, the clamping plate is free from the stop, and then the turned frame can extend along a shaft hole and displace slightly upward, and can be turned forwards and downwards to be the straight and upright state.