Provided are a terminal and a system and method of measuring a network state using the terminal. The system of measuring the network state according to an embodiment of the present disclosure includes a transmission terminal that transmits exploration packets, and a reception terminal that receives the exploration packets to measure an One-way Trip Time (OTT) of each of the exploration packets and calculates queuing delay using an average value of the measured OTTs and a minimum value of the measured OTTs.