本論文主要在討論P2P網站經營者提供其會員點對點檔案分享服務的行為是否成立擅自重製罪或擅自公開傳輸罪之幫助犯。所謂的中性業務行為是指，所從事的業務不取決於交易對象之行為或交易情況，完全出於自己的目的而進行。德國實務與學說普遍認為，在決定中性業務行為是否應承擔幫助犯責任時，必須考慮其所具有的中性行為性質。審理經營P2P業務之ezPeer網站經營者是否成立幫助犯之士林地方法院也採取類似觀點。本文將先介紹德國刑法上關於中性業務行為的各種理論，接著才將這些理論適用於P2P網站經營者責任的討論上。

This Article aims to discuss whether P2P website operator’s providing peer-to-peer file?sharing service constitutes the aiding in the commission of unauthorized reproduction or distribution offense. The term “neutral business activity” refers to the business activity which is conducted relying exclusively on its own purposes without any reference to the behavior of the traders or trading circumstances. Many German commentators have argued that business activity may not be imposed aiding liability without taking its neutral nature into account. The ezPeer court decision also adopted similar opinion. This Article first provides a study of many aspects of the neutral business activity doctrine in the German criminal law. Next the Author discusses the applications of this doctrine to P2P website operator’s liability.