Anti-stress biological agent for transporting livestock and preparation method of agent

The invention belongs to the field of biological agents, and relates to a biological agent for reducing stress reaction generated in the transporting process of livestock and a preparation method of the gent. The biological agent comprises melatonin cyclodextrin inclusion compounds, Tween, alcohol, astragalus polysaccharides g, silver yellow soluble powder, tea polyphenol, chlorogenic acid, waterfor injection and diluted hydrochloric acid. The biological agent has the functions of pain alleviation, hypnosis, immune adjustment, aging resistance and bacteriostasis, the agent is injected into the body of the livestock before livestock transportation, the immunity of a livestock immune system is enhanced while the sensitivity of the livestock to external stimulation is reduced, so that stressreaction of the livestock in the transporting process is greatly reduced, and the incidence rate, the death rate and incidence economic loss of the livestock in the transporting process are greatly reduced. 本发明属于生物制剂领域，涉及种用于降