PROBLEM TO BE SOLVED: To provide a brain wave measuring device and a brain wave measuring system capable of improving brain wave measurement accuracy.SOLUTION: The brain wave measuring device includes a first brain wave measuring unit that is worn in one ear of a user to measure brain waves, a second brain wave measuring unit that is worn in the other ear of the user to measure brain waves, and transmission means that transmits a brain wave measurement result to a terminal device. The first brain wave measuring unit comprises first brain wave measuring means which comes into contact with the one ear, and second brain wave measuring means which is joined to the first brain wave measuring means and comes into contact with the one ear. The second brain wave measuring unit comprises third brain wave measuring means which comes into contact with the other ear, and fourth brain wave measuring means which is joined to the third brain wave measuring means and comes into contact with the other ear.SELECTED DRAWING: Figure 3【課題】脳波の測定精度を高めることができる脳波測定装置及び脳波測定システムを提供する。【解決手段】脳波測定装置は、ユーザの一方の耳に装着されて脳波を測定する第１脳波測定装置と、他方の耳に装着されて脳波を測定する第２脳波測定装置と、脳波測定結果を端末装置に送信する送信手段と、を含み、第１脳波測定装置は、一方の耳に接触する第１脳波測定手段と、第１脳波測定手段と繋がって一方の耳に接触する第２脳波測定手段と、を有し、第２脳波測定装置は、他方の耳に接触する第３脳波測定手段と、第３脳波測定手段と繋がって前記他方の耳に接触する第４脳波測定手段と、を有する。【選択図】図３
