The present invention relates to a brainwave sensing structure adapted to a hard hat body. The brainwave sensing structure includes a cover body, a brainwave sensor, and a pole cable management device. The cover body is detachably coupled to the hard hat body to define an accommodating space and is formed with an aperture in communication with the accommodating space. The brainwave sensor is received in the accommodating space and includes a pole retrieval unit. The pole retrieval unit includes a contact portion that is exposed outside the aperture. The pole retrieval unit is extendable from the accommodating space toward outside of the aperture. The pole cable management device is received in the accommodating space, and the pole retrieval unit is stored in the pole cable management device.本發明係有關一種腦波感測構造，適用於一安全帽本體，且包含一罩體、一腦波感測器及一極點集線器，該罩體可拆地結合於該安全帽本體，且界定一收納空間，及形成與該收納空間連通的一孔洞，該腦波感測器容置於該收納空間內，並包括一極點擷取單元，該極點擷取單元包括一接觸部，該接觸部外露於該孔洞，該極點擷取單元能在該收納空間自該孔洞向外延伸，該極點集線器容置於該收納空間，該極點擷取單元收納至該極點集線器。
