The utility model discloses a convenient to carry's electric power detects instrument knapsack, including the knapsack main part, the back of knapsack main part is equipped with the braces, the knapsack main part includes that first layer package, the second floor by openly setting gradually to north orientation wraps and third layer package, the back edge of knapsack main part is equipped with the pull ring, the middle both sides of braces are equipped with rubber band area and buckle, and the centre of braces is fixed on the pull ring at the lateral wall edge of knapsack main part through the rubber band area. Third layer package is connected through the zip fastener to second floor package, second floor package is connected through the zip fastener to the first layer package. The internal surface bottom of first layer package or second floor package is equipped with the cloth pocket, the first layer wraps or the internal surface upper end of second floor package is equipped with fixed cover, and just fixed cover from left to right increases in proper order, the lateral wall of first layer package or second floor package articulates there is the clip. The utility model discloses simple structure, it is fixed convenient, conveniently take and use, improve work efficiency, the space of rational utilization knapsack.