This the first in a series of papers on how Psychodynamic Therapy with Infants and Parents (PTIP) can inspire work with adult therapy. PTIP helps infants and parents improve their relationship and facilitate child development. During sessions, developmental hazards are dramatized by parent and baby, giving the therapist first-hand impressions of how conflictual relationships impact on the well-being of mother and child. This paper argues that PTIP experiences may also inspire analytic work with adult patients. (1) It gives the analyst a foothold when reconstructing a patient's infantile trauma and linking it with her present distress. (2) It deepens his/her attention on primitive anxieties, para-verbal communication and psychosomatic functioning. (3) PTIP experiences with high-speed interchanges between container and contained, personified by baby and parent, seem to induce more internal images and metaphors also in adult work. (4) Working with two patients simultaneously makes the analyst's position resemble that of a couple therapist or a participant observer of the traffic between container and contained. This can make him/her more agile in dealing with corresponding movements between himself/herself and the patient. The present paper focuses on (1), reconstructive work in adult work inspired by PTIP experiences.