Tea filter and tea making utensil using same

A tea making cavity and a cup body through hole are formed in a filter cup body of the tea filter, a guide sleeve, a filter screen and a lower end limiting sleeve are arranged in the tea making cavity, and the lower end limiting sleeve is provided with a limiting blocking shoulder. The lower end part of the lower end limiting sleeve penetrates through the cup body through hole and extends to the lower end side of the filter cup body; a detachable bottom sealing and fastening ring is arranged at the lower end part of the lower end limiting sleeve; the edge part of the through hole of the cup body is clamped between the limiting baffle shoulder and the bottom sealing and fastening ring; a movable valve rod and a compression spring are embedded in the sleeve through hole, a detachable movable valve head is arranged at the lower end of the movable valve rod, and the movable valve head abuts against and makes contact with a lower end opening of the fastening ring through hole and seals the lower end opening of the