At present, the economy and trade development have created positive and negative impacts for Indonesian consumers, especially the loss caused by hidden defect goods of product. This progress needs law instruments as a means of protecting, anticipating, and settling any challenges. Therefore, it is necessary to create: the philosophical basis of consumer protection towards the loss as the result of hidden defect goods of product based on liability of fault principles and without fault principles /strict liability, the urgent of strict liability principle of produces towards the loss as the result of hidden defect goods of product based on the Law of the Republic of Indonesia Number 8-1999 on Consumer Protection, and the concept of radical law in arranges the strict liability principle in the frame of law system of consumer protection in Indonesia. In the future, it needs concrete theory, values, principles, and norm of law based on Pancasila, the Constitution 1945 that need amendment of the Law of the Republic of Indonesia Number 8-1999 and its length by forming the law about the strict liability of produces to the loss as the result of hidden defect goods of product.