The photoassociation reactions H+D+and H++D induced by the one-and two-colour laser pulses are theoretically studied.The reactions occur through two channels:(i)H(1S)+D+-→HD+,and(ii)H++D(1S)→HD+.The reaction probability through channel (ii) is higher than through channel (i).The populations of the products H++D and HD+and the ratio of H++D to HD+can be controlled by laser pulses.The two-colour laser pulses Can more efficiently lower the dissociation probability and therefore enhance the yield ratio of the product HD+.