Multifunctional clamping groove

The utility model relates to a multifunctional card slot which comprises a card support and a detection card fixing assembly arranged on the card support. The detection card fixing assembly comprises two clamping parts which are oppositely arranged, at least one clamping part is in sliding fit with the card support so that the relative distance between the two clamping parts can be adjusted, and a clamping mechanism is arranged between the slidable clamping part and the card support; wherein a step-shaped groove with a plurality of notches is formed in the face, facing the other clamping part, of one clamping part, the notches are matched with various detection cards of different specifications respectively, the detection cards are contained in the notches, and the two clamping parts are matched with the clamping mechanism to clamp and fix the detection cards; an accommodating groove which is matched with the detection strip and is used for accommodating the detection strip is formed in the card support, and