The invention provides a stove and a pot detection device thereof. The pot detection device comprises a support, a detection rod and a switch, wherein the detection rod is arranged in the support andprotrudes out of the support so as to make contact with and be pressed by a pot, the detection rod can elastically move up and down in the support, and a protruding part is arranged on the detection rod; when the detection rod moves up and down, the protruding part touches the switch to generate a trigger signal or to release the switch to cut off the trigger signal; the support is provided with alock part matched with the detection rod; when the lock part is coupled with the detection rod, the detection rod is locked; and when the lock part is separated from the detection rod, the detectionrod can freely move up and down. By adoption of the scheme, the flexibility of the port detection device can be effectively improved, so that various requirements of users are met.