By learning from nature, human beings have found many effective drugs for cancer treatment, such as camptothecin, vinblastine, or paclitaxel and its derivatives paclitaxel and ocetaxel, which have been isolated from plants. In addition to plants, bioactive molecules of marine origin have also attracted extensive attention in the research of new anticancer drugs in recent years. In addition to plants, in recent years, marine-derived bioactive molecules have also received extensive attention in the research of new anticancer drugs. Currently, the US FDA has approved more than 10 types of bioactive molecules derived from marine organisms as cancer chemotherapeutic agents, and there are new extended applications for these drugs, i.e., they play a key role as components of the ADC Antibody Drug Conjugate (ADC) for new innovative assembled missiles (ADCs). The new application of ADC is also one of the key components (toxin/chemotherapeutic agent) in ADC.