The invention relates to an anti-disassembly electronic wrist strap based on resistance detection. In order to overcome the problem of low safety brought by an on-off state detection manner of an electronic loop adopted by the traditional electronic wrist strap, the invention proposes an electronic wrist strap design based on the anti-disassembly detection of the electronic loop formed by mechanical and physical mediums in combination with the active radio frequency identification technology and the electronic circuit resistance detection technology; and an ID (identification) number of the electronic wrist strap is formed by combining a fixed ID identification arranged in a radio frequency identification unit and a state feature code based on the resistance detection of the electronic loop. The electronic wrist strap is only used for transmitting number information formed by the self-fixed ID identification and the state feature code in a small time window in a wireless manner and is in a dormant state at ordinary times, so that the power consumption of the electronic wrist strap is greatly reduced, thereby the purposes of high reliability, ultra Low power consumption and long service life are achieved.