The invention relates to a rotating type children safety seat comprising an installing base, a rotatable automotive seat and a locking and locating mechanism. The locking and locating mechanism comprises a locating lock hook arranged on the installing base and a locating lock hole unit; the locating lock hole unit comprises a first locating lock hole and a second locating lock hole arranged successively in the front-back direction of the seat; the automotive seat has two working positions; when the locating lock hook is inserted in the first locating lock hole, the locking and locating mechanism is locked and the automotive seat is located at a first working position; when the locating lock hook is inserted in the second locating lock hole, the locking and locating mechanism is locked and the automotive seat is located at a second working position; when the locating lock hook breaks away from the first locating lock hole and the second locating lock hole, the locking and locating mechanism is unlocked and the automotive seat can rotate relative to the installing base. The automotive seat and the installing base can be locked and unlocked when the locating lock hook is inserted in or breaks away from the first locating lock hole or the second locating lock hole and at the same time, the automotive seat can switch between the two working positions, so that the operation is convenient.