To provide a customer information management system by which distribution of merchandise, plumbing, etc., are easily performed even an owner of a facility is absent on a spot where the system is to be laid and installed.

When a distribution request of the merchandise is made from a customer 5 to a management center where positional data of a distribution vehicle 2 on which a communication unit 20 with a built-in GPS receiver 22 is mounted is stored in a positional information data base 19 and distribution state data of the distribution vehicle is stored in a distribution state data base 18, customer data is retrieved in the management center 1, the optimal distribution vehicle 2 is specified based on the location of the customer 5, the current position stored in the positional information data bases 19 and the distribution state stored in the distribution state data bases 18 of the respective distribution vehicles 2 managed by the management center 1, a distribution instruction is given to the distribution vehicle 2 by transmitting the merchandise to be distributed, the positional information of the customer 5 and map data of an area of the customer 5 and house map data around the customer 5 and house drawing data of the customer 5 are transmitted to the distribution vehicle 2 based on the positional information of the distribution vehicle 2 to be transmitted from a communication unit 20 with fixed cycle by the distribution vehicle 2 that receives the transmitted distribution instruction.