Disclosed is a dual-frequency slot MIMO antenna, comprising two antenna radiators, wherein the bottoms of the two antenna radiators are connected to each other, and an included angle is formed between inner side edges thereof; the inner side edges of the two antenna radiators are connected via a neutral line; a metal layer is laid on an upper surface of a dielectric substrate covered by the two antenna radiators to serve as a metal radio frequency ground; the neutral line is connected to a lumped capacitor C; the lumped capacitor C is connected to a metal block; each antenna radiator is composed of a multi-mode slot resonator and a coplanar wave guide feeder line with a T-shaped structure; the multi-mode slot resonator is composed of a folded slot resonator and a coplanar wave guide stepped impedance resonator; the coplanar wave guide stepped impedance resonator is connected to the metal radio frequency ground; and the multi-mode slot resonator is fed via the coplanar wave guide feeder line. The dual-frequency slot MIMO antenna in the present utility model has a simple structure, a high practicability and a high isolation degree, and can realize the reconfigurability of an antenna frequency.
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