The research of “trustworthiness” in modern artificial intelligence (AI) usually focuses on human’s trust in intelligent algorithms. But in the requirement of the shift of the field of risk control to AI’s ability of “reasonably doubt”, algorithmic “trust” has also become an important issue of artificial intelligence ethics. Risk management itself is a question of how to trust someone. In modern futurology, the planning of trust and doubt is handed over to technology to reduce risk. The artificial intelligence risk control takes data and algorithm as a way to trust human, which is an inevitable social depth disembedding characteristic of “post-human” in the intelligent age. As a result, AI risk control needs a unique philosophical attention compared with other intelligent technologies. But the risk prevention and control under the trust of algorithm must face the consideration of justice. Under the situation that the artificial intelligence object is gradually regarded as an active agent, realizing its “reasonable doubt” in the scene of risk control has become the basic ethical requirement of intelligent risk control.