A helmet with an electroencephalographic detector includes a helmet body and a lining. The helmet body includes a casing, and a buffer layer disposed on an inner side of the casing and having at least one groove disposed in its front portion. The lining, disposed on an inner side of the buffer layer, includes a lining body and at least one electroencephalographic detector. The lining body having an engaging part detachably engaging the helmet body. The electroencephalographic detector is connected to a front portion of the lining body and partially disposed within the groove. Thereby the electroencephalographic detector is properly fastened to the helmet body.一種附有腦波偵測器的安全帽，包含：一安全帽本體及一內襯。該安全帽本體包含一帽殼及一緩衝層，該緩衝層位於該帽殼內，該緩衝層之一前端部設有至少一凹槽。該內襯位於該緩衝層內，包含一內襯主體及至少一腦波偵測器，該內襯主體包含一結合部，該結合部用於可拆地結合於該安全帽本體，前述腦波偵測器結合於該內襯主體之一前端部，且前述腦波偵測器至少一部分位於前述凹槽內。藉此，可較佳地將腦波偵測器整合至安全帽本體上。
