Yes. According to Inquiry 23 Health Network, we learned that raw pickled beans are toxic. Beans contain phytohemagglutinin, saponin and protease inhibitor. These substances can cause symptoms of poisoning in the body. In daily life, beans must be fully cooked and mature. After the raw beans are pickled, the toxins are not removed, and patients may also experience dizziness, nausea, and diarrhea after eating them.