Small thorns into the flesh can not ignore it, because these small thorns, whether it is a wood splinter, iron filings, or fish spines, etc., the surface will be attached to bacteria, viruses or other pathogenic microorganisms. When small spines into the human body, these pathogenic microorganisms will continue to multiply in the human body, resulting in local inflammatory reactions, including redness, swelling, heat, pain, and even pus, then need to be cut to drain the pus, which will be even more serious damage to the local area. If infected with some special pathogenic microorganisms, such as tetanus bacillus, there may be a risk of tetanus infection. This is because the tetanus bacillus will secrete tetanus toxin, which will cause damage to the nerves of the human body, making the human body’s muscles constantly spasm, and even affecting the respiratory function which is life-threatening.