The invention discloses a screening method of a banana aquaporin gene promoter transcription factor. The screening method includes the following steps: a core region of a promoter is judged, wherein according to a banana A genome, primers of the promoter are designed and amplified, the amplification length is 1362 bp, through plantcare and PLACE, cis-acting elements of the promoter are analyzed, GUS activity of the promoter is detected, and through dyeing conditions, the core region B of the promoter is judged; and yeast one-hybrid is conducted to screen the transcription factor interacting with the promoter, wherein the yeast one-hybrid method is used for verification, the core region B of the promoter serves as a bait section for building a bait carrier, and a banana one-hybrid library obtained through yeast drought treatment is screened. By adopting the screening method of the banana aquaporin gene promoter transcription factor, the transcription factor which is directly bonded to the MaPIP1;1 promoter under drought stress conditions is identified, therefore, research for banana aquaporin genes is more convenient, the draught resistance capability of transgenic bananas can be improved, and a draught resistance mechanism of MaPIP1;1 can be further understood.