刀是中古战争最普遍使用的“常规武器”之一,除了生产和生活中使用的各式刀具外,作为武器的刀,当时的形制和剑相似,是短兵器。五代蜀马鑑《续事始》引《二仪实录》曰: 刀之制有四:阵之刀,起自蚩尤与黄帝战于涿鹿即有。陌刀,军阵用之。又阵障刀,侍从障卫则用之;代张耳又有长刀,即卤簿千刀 A knife is one of the “conventional weapons” most commonly used in medieval wars. Apart from all kinds of knives used in production and daily life, knives as weapons are similar to swords at the time and are short weapons. The Five Dynasties Shu Ma Kam, “Continuation of the incident” cited “Two Record” said: Knife system has four: array of knives, since Qi and the Yellow Emperor war in the deer that there. Street knife, military array with it. Another knife barrier, attendants use the barrier is used;