The historian Chen Gongzhe, who was also one of Huo's students, believed that the cause of his master's death was hemoptysis disease. Chen wrote that Huo was introduced to a Japanese physician by the judo instructor as his health declined. The physician prescribed some medicine for his condition, but Huo's health continued to deteriorate. Huo was admitted to the Shanghai Red Cross Hospital, where he died two weeks later. Although Chen did not mention that the medicine prescribed by the Japanese physician contained arsenic or any other poison, some leaders of the Chin Woo Athletic Association speculated that Huo was poisoned around the time of his death.