A hearing aid microphone structure and a hearing aid are provided. The hearing aid microphone structure includes a microphone, a sound-guiding foam and a dust-proof net. The microphone is arranged on a front surface of a first end plate in a housing, wherein the first end plate is a part of a flexible circuit board, and the first end plate has a sound transmission hole. The sound-guiding foam arranged on a rear surface of the first end plate, wherein the sound-guiding foam has a sound-guiding hole, and the sound-guiding hole is communicated with the sound transmission hole. The dust-proof net arranged on the sound-guiding foam, wherein the dust-proof net has a peripheral portion and a net portion, and the net portion is blocked in front of the sound-guiding hole.