Flatness detection device of back cover of mobile phone

The invention discloses a flatness detection device of a back cover of a mobile phone. The device includes a device base, a laser range finder, a power mechanism and a carrier used for carrying the back cover of the mobile phone to be detected; a horizontal working platform is arranged on the top side of the device base; the laser range finder is fixedly arranged above the horizontal working platform through a floor stand; the power mechanism is arranged on the horizontal working platform, and the carrier is arranged on the power mechanism and can be driven to move into a measurement range ofthe laser range finder by the power mechanism to conduct flatness detection on the back cover of the mobile phone to be detected; the flatness detection device of the back cover of the mobile phone ishigh in automation degree and running speed and capable of not only improving the production efficiency, but increasing the accuracy of detection operation and effectively ensuring the qualificationrate of mobile phone products; additionally, during usage of the flatness detection device of the back cover of the mobile phone, the required number of operators is small, and the production cost iseffectively saved.