A latch assembly connected to a lock face of a sliding door includes two hooks which are connected to two activation plates respectively. Two rotation gears each have teeth engaged with the activation plates which are moved to pivot the two hooks when the two gears are rotated. A safety member is biased by a spring and includes a contact pin which movably extends through the lock face on the sliding door so that the safety member is pushed when the contact pin is pushed by a fixed door when the sliding door is in close position. The safety member further has an engaging pin which is removably engaged with the recess of the activation plate so that when the sliding door is in open position, the activation plate cannot be moved and the hooks are remained in the sliding door.