The invention discloses an incandescent lamp fitting for a fishery farm. The incandescent lamp fitting comprises a lamp shade; a lamp cap is arranged at the top end of the lamp shade; a second fixingblock is arranged on one side of the lamp shade; one side of the second fixing block is rotationally connected with a rotating shaft; a ratchet wheel is arranged at one end of the rotating shaft; oneside of the rotating shaft is connected with a second fixing plate; one side of the second fixing plate is rotationally connected with a pawl; the pawl is clamped with the ratchet wheel; a second fixing ring is arranged at one end of the second fixing plate; a fixed bolt penetrates through the interior of the second fixing ring; the fixed bolt penetrates through a first fixing ring; the first fixing ring is welded on one side of a first fixing plate; the rotating shaft is rotationally connected with a first fixing block; the first fixing block is arranged on one side of the lamp shade; a shutter is arranged at the top of the lamp shade; and aluminum foil fins are arranged on the lower surface of the shutter. By taking an incandescent lamp as a light source and matching with the aluminum foil fins, ambient air of the incandescent lamp fitting is heated and dried, and the probability of short circuited failures of the incandescent lamp fitting is reduced.