A spring leaf and a manufacturing method of making the spring leaf are disclosed. The spring leaf is installed in a casing to replace a butting part on the casing. The spring leaf includes at least a pole, at least an elastic connector, at least an elastic arm, a contact part which contacts the butting part, and a connecting part which is formed between the elastic arm and the contact part by injection molding. The contact part rotates between a positioning location and an escaping location in the casing through an elastic resetting function which is generated by the elastic arm, so as to quickly replace the butting part on the casing.
展开▼
