Protector with sensor and method of molding end part of the same

A protector (10) with a sensor (80) is installed on a sliding door (1) for detecting an alien substance by touch between two core wires (31, 32) in a hollow part (12). In a terminal part of the protector with the sensor, the core wires drawn out are connected with a resistor (39) or leads joined with a control unit. A primary seal (100) is formed by injection molding for coating wire connection parts and another end side of an insert and a secondary seal (200) is formed by the injection molding for coating a part formed with the primary seal for forming an external shape of a product.