today, i saw a lvl 5 person hit with his bamboo cane and every time he hits, he hit about 25-31 damages. so i just wanna ask is the hitpoints base on your wisdom(esp), or just the matter of the cane?

you mean damage.
DAMAGE for spells is based on your wisdom for a cane user, and also his cane technique skill level, as well as your respiratory/circulatory/nervous system levels. Positive levels of the last 3 will induce higher damage, negative values will cause a drop in damage. These 3 systems can be healed by eating what we call 'mage food', namely the crucian carp spicy soup, catfish spicy soup, and carp spicy soup. Different Magic needs different systems, so you need to know which one you are going to commit to for the period of time and subsequently select which food you wanna eat.