A fishing net for catching crucian in a brook comprises three steel bar supporting rings, wherein the three steel bar supporting rings are mutually connected and fixed through net ropes; mesh walls wrap the outer side surfaces of the three steel bar supporting rings which are mutually connected and fixed through the net ropes to form a cage body; an opening part of the rear part of the cage body is connected with a fish storage bag; steel bar supports are arranged in an inner cavity of the fish storage bag, are used for supporting an inner space, and extend all the way onto the jag of a fish taking opening; a fish inlet and a fish storage bag fish inlet are formed in the opposite opening parts of the two ends of the cage body; the fish inlet and the fish storage bag fish inlet are provided with inner inverse tassels; the inner inverse tassels extend inwards and are connected with an inner inverse tassel opening; the inner inverse tassel opening is fixed by an inner inverse tassel opening cord pull; a bait bag is arranged in an inner cavity of the cage body; and the bait bag is fixed by a bait bag cord pull.